diff --git a/package.json b/package.json
index 5f100d02f..60565c14a 100644
--- a/package.json
+++ b/package.json
@@ -93,7 +93,7 @@
     "moment-duration-format": "^2.3.2",
     "moment-timezone": "^0.5.33",
     "mui-color-input": "^9.0.0",
-    "openstack-uicore-foundation": "5.0.67",
+    "openstack-uicore-foundation": "5.0.70",
     "p-limit": "^6.1.0",
     "path-browserify": "^1.0.1",
     "postcss-loader": "^6.2.1",
diff --git a/src/components/CustomTheme.js b/src/components/CustomTheme.js
index d16841edf..ab3f7f44c 100644
--- a/src/components/CustomTheme.js
+++ b/src/components/CustomTheme.js
@@ -25,40 +25,23 @@ const theme = createTheme(MuiBaseCustomTheme, {
   typography: {
     fontFamily: ["Roboto", "sans-serif"].join(","),
     body1: {
-      fontSize: "14px",
-      fontWeight: 400
+      fontSize: "14px"
     },
     body2: {
-      fontSize: "14px",
       fontWeight: 500
     },
-    caption: {
-      fontSize: "12px",
-      fontWeight: 400
-    },
     subtitle2: ({ theme: t }) => ({
-      fontSize: "14px",
-      fontWeight: 500,
       color: t.palette.text.primary
     }),
     h4: {
-      fontSize: "34px",
-      fontWeight: 500,
-      lineHeight: "42px",
-      letterSpacing: "0.25px"
+      fontWeight: 500
     },
     h5: {
-      fontSize: "24px",
-      fontWeight: 400,
       "&.MuiTypography-gutterBottom": {
         marginBottom: "20px"
       }
     },
     h6: {
-      fontSize: "20px",
-      fontWeight: 500,
-      lineHeight: "32px",
-      letterSpacing: "0.15px",
       "&.MuiTypography-gutterBottom": {
         marginBottom: "20px"
       }
@@ -78,18 +61,15 @@ const theme = createTheme(MuiBaseCustomTheme, {
     MuiButton: {
       styleOverrides: {
         root: ({ ownerState }) => ({
-          fontWeight: 500,
           boxShadow: "none",
           "&:hover": { boxShadow: "none" },
           "&:active": { boxShadow: "none" },
           "&:focus": { boxShadow: "none" },
           ...(ownerState.size === "small" && {
-            fontSize: "13px",
             lineHeight: "18px",
             padding: "9px 16px"
           }),
           ...(ownerState.size === "medium" && {
-            fontSize: "14px",
             lineHeight: "20px",
             padding: "8px 12px",
             height: "36px"
@@ -105,7 +85,6 @@ const theme = createTheme(MuiBaseCustomTheme, {
     MuiTab: {
       styleOverrides: {
         root: {
-          fontSize: "14px",
           lineHeight: "18px",
           color: "#00000099",
           "&.Mui-selected": {
diff --git a/src/components/forms/admin-access-form.js b/src/components/forms/admin-access-form.js
index e8e9674d0..f743b8d12 100644
--- a/src/components/forms/admin-access-form.js
+++ b/src/components/forms/admin-access-form.js
@@ -106,7 +106,7 @@ const AdminAccessForm = ({
               multi
             />
             {formik.touched.members && formik.errors.members && (
-              <Typography color="error" sx={{ fontSize: "1.2rem", mt: 0.5 }}>
+              <Typography color="error" sx={{ fontSize: "0.75rem", mt: 0.5 }}>
                 {formik.errors.members}
               </Typography>
             )}
@@ -129,7 +129,7 @@ const AdminAccessForm = ({
               multi
             />
             {formik.touched.summits && formik.errors.summits && (
-              <Typography color="error" sx={{ fontSize: "1.2rem", mt: 0.5 }}>
+              <Typography color="error" sx={{ fontSize: "0.75rem", mt: 0.5 }}>
                 {formik.errors.summits}
               </Typography>
             )}
diff --git a/src/components/forms/selection-plan-form.js b/src/components/forms/selection-plan-form.js
index 4ba555944..1c13063df 100644
--- a/src/components/forms/selection-plan-form.js
+++ b/src/components/forms/selection-plan-form.js
@@ -52,8 +52,6 @@ const buildInitialValues = (entity, timezone) => {
 };
 
 const TAB_SX = {
-  fontSize: "1.4rem",
-  lineHeight: "1.8rem",
   minHeight: "36px",
   px: 2,
   py: 1
diff --git a/src/components/image-preview-cell.js b/src/components/image-preview-cell.js
index af93ce840..f72d27da9 100644
--- a/src/components/image-preview-cell.js
+++ b/src/components/image-preview-cell.js
@@ -36,11 +36,12 @@ export const ImagePreviewCell = React.memo(
     return (
       <>
         <IconButton
-          size="medium"
+          size="small"
           aria-label={T.translate("preview_modal.title")}
           onClick={() => setOpen(true)}
+          sx={{ p: 0 }}
         >
-          <ImageIcon fontSize="large" />
+          <ImageIcon />
         </IconButton>
 
         {open && (
diff --git a/src/components/mui/formik-inputs/mui-formik-datetimepicker.js b/src/components/mui/formik-inputs/mui-formik-datetimepicker.js
index 5d8904fdc..add1eb48a 100644
--- a/src/components/mui/formik-inputs/mui-formik-datetimepicker.js
+++ b/src/components/mui/formik-inputs/mui-formik-datetimepicker.js
@@ -49,14 +49,13 @@ const MuiFormikDatetimepicker = ({
           },
           day: {
             sx: {
-              fontSize: "1.2rem",
               fontWeight: 600
             }
           },
           layout: {
             sx: {
               "& .MuiDayCalendar-weekDayLabel": {
-                fontSize: "1rem"
+                fontSize: "0.625rem"
               }
             }
           }
diff --git a/src/components/select-page-template-dialog/index.js b/src/components/select-page-template-dialog/index.js
index 3779ab5a5..dadac1f65 100644
--- a/src/components/select-page-template-dialog/index.js
+++ b/src/components/select-page-template-dialog/index.js
@@ -148,7 +148,7 @@ const SelectPageTemplateDialog = ({
           {T.translate("show_pages.global_page_popup.title")}
         </Typography>
         <IconButton size="large" sx={{ p: 0 }} onClick={() => handleClose()}>
-          <CloseIcon fontSize="large" />
+          <CloseIcon />
         </IconButton>
       </DialogTitle>
       <Divider />
diff --git a/src/components/sponsors/reports/ReportViewToggle.js b/src/components/sponsors/reports/ReportViewToggle.js
index d4811e3c0..7e18b9fb1 100644
--- a/src/components/sponsors/reports/ReportViewToggle.js
+++ b/src/components/sponsors/reports/ReportViewToggle.js
@@ -8,16 +8,12 @@ import T from "i18n-react/dist/i18n-react";
 const ReportViewToggle = ({ value, onChange }) => (
   <ToggleButtonGroup
     exclusive
-    size="medium"
+    size="small"
     value={value}
     onChange={(_e, next) => {
       if (next) onChange(next);
     }}
     aria-label={T.translate("sponsor_reports_page.view_toggle")}
-    // Match the adjacent action buttons (Print / Export CSV) typography.
-    // Use px, not rem: this app sets html root font-size to 62.5% (10px), so a
-    // hardcoded "0.875rem" would render 8.75px. The MuiButton resolves to 14px.
-    sx={{ "& .MuiToggleButton-root": { fontSize: "14px", fontWeight: 500 } }}
   >
     <ToggleButton value="orders">
       {T.translate("sponsor_reports_page.view_orders")}
diff --git a/src/pages/sponsors-global/form-templates/add-form-template-item-popup.js b/src/pages/sponsors-global/form-templates/add-form-template-item-popup.js
index 572222989..0ea3a694f 100644
--- a/src/pages/sponsors-global/form-templates/add-form-template-item-popup.js
+++ b/src/pages/sponsors-global/form-templates/add-form-template-item-popup.js
@@ -175,7 +175,7 @@ const AddFormTemplateItemDialog = ({
   return (
     <Dialog open onClose={handleClose} maxWidth="md" fullWidth>
       <DialogTitle sx={{ display: "flex", justifyContent: "space-between" }}>
-        <Typography fontSize="1.5rem">
+        <Typography fontSize="1rem">
           {T.translate("inventory_items_list_modal.select_items")}
         </Typography>
         <IconButton size="small" onClick={() => handleClose()} sx={{ mr: 1 }}>
@@ -214,8 +214,7 @@ const AddFormTemplateItemDialog = ({
                   }
                 ]}
               >
-                <SwapVertIcon fontSize="large" sx={{ mr: 1 }} />{" "}
-                {T.translate("general.sort_by")}
+                <SwapVertIcon sx={{ mr: 1 }} /> {T.translate("general.sort_by")}
               </MenuButton>
             </Grid2>
             <Grid2 size={8}>
diff --git a/src/pages/sponsors-global/form-templates/form-template-from-duplicate-popup.js b/src/pages/sponsors-global/form-templates/form-template-from-duplicate-popup.js
index d5a079d20..9e9ed0f59 100644
--- a/src/pages/sponsors-global/form-templates/form-template-from-duplicate-popup.js
+++ b/src/pages/sponsors-global/form-templates/form-template-from-duplicate-popup.js
@@ -94,7 +94,7 @@ const FormTemplateFromDuplicateDialog = ({
   return (
     <Dialog open onClose={handleClose} maxWidth="md" fullWidth>
       <DialogTitle sx={{ display: "flex", justifyContent: "space-between" }}>
-        <Typography fontSize="1.5rem">
+        <Typography fontSize="1rem">
           {T.translate("form_template_from_duplicate_dialog.duplicate_form")}
         </Typography>
         <IconButton size="small" onClick={() => handleClose()} sx={{ mr: 1 }}>
@@ -125,8 +125,7 @@ const FormTemplateFromDuplicateDialog = ({
                   }
                 ]}
               >
-                <SwapVertIcon fontSize="large" sx={{ mr: 1 }} />{" "}
-                {T.translate("general.sort_by")}
+                <SwapVertIcon sx={{ mr: 1 }} /> {T.translate("general.sort_by")}
               </MenuButton>
             </Grid2>
             <Grid2 size={8}>
diff --git a/src/pages/sponsors-global/form-templates/form-template-list-page.js b/src/pages/sponsors-global/form-templates/form-template-list-page.js
index bec30a492..f66bdde7e 100644
--- a/src/pages/sponsors-global/form-templates/form-template-list-page.js
+++ b/src/pages/sponsors-global/form-templates/form-template-list-page.js
@@ -192,9 +192,6 @@ const FormTemplateListPage = ({
           size="small"
           onClick={() => handleManageItems(row)}
           sx={{
-            fontSize: "1.3rem",
-            fontWeight: 500,
-            lineHeight: "2.2rem",
             padding: "4px 5px"
           }}
         >
diff --git a/src/pages/sponsors-global/page-templates/page-template-popup/index.js b/src/pages/sponsors-global/page-templates/page-template-popup/index.js
index f5019ff9f..f2983c195 100644
--- a/src/pages/sponsors-global/page-templates/page-template-popup/index.js
+++ b/src/pages/sponsors-global/page-templates/page-template-popup/index.js
@@ -226,7 +226,7 @@ const PageTemplatePopup = ({
       disableEscapeKeyDown={isSaving}
     >
       <DialogTitle sx={{ display: "flex", justifyContent: "space-between" }}>
-        <Typography fontSize="1.5rem">{popupTitle}</Typography>
+        <Typography fontSize="1rem">{popupTitle}</Typography>
         <IconButton
           size="small"
           onClick={handleClose}
diff --git a/src/pages/sponsors-global/page-templates/page-template-popup/module-clone-control.js b/src/pages/sponsors-global/page-templates/page-template-popup/module-clone-control.js
index 98661565b..4748584be 100644
--- a/src/pages/sponsors-global/page-templates/page-template-popup/module-clone-control.js
+++ b/src/pages/sponsors-global/page-templates/page-template-popup/module-clone-control.js
@@ -72,7 +72,7 @@ const ModuleCloneControl = ({
       <Tooltip
         title={disabled ? disabledReason : ""}
         arrow
-        componentsProps={{ tooltip: { sx: { fontSize: "1rem" } } }}
+        componentsProps={{ tooltip: { sx: { fontSize: "0.625rem" } } }}
       >
         <span>
           <Button
diff --git a/src/pages/sponsors/components/card-enabled-indicator.js b/src/pages/sponsors/components/card-enabled-indicator.js
index 9e135a7cd..0a45086db 100644
--- a/src/pages/sponsors/components/card-enabled-indicator.js
+++ b/src/pages/sponsors/components/card-enabled-indicator.js
@@ -28,11 +28,7 @@ const CardEnabledIndicator = ({ purchase }) => {
 
   return (
     <Tooltip title={label}>
-      <CreditCardIcon
-        fontSize="large"
-        sx={{ color: "primary.main" }}
-        aria-label={label}
-      />
+      <CreditCardIcon sx={{ color: "primary.main" }} aria-label={label} />
     </Tooltip>
   );
 };
diff --git a/src/pages/sponsors/popup/add-sponsor-popup.js b/src/pages/sponsors/popup/add-sponsor-popup.js
index 0fc6e0a5b..0d06b722a 100644
--- a/src/pages/sponsors/popup/add-sponsor-popup.js
+++ b/src/pages/sponsors/popup/add-sponsor-popup.js
@@ -12,7 +12,6 @@ import {
   IconButton,
   Divider,
   Grid2,
-  Typography,
   InputLabel,
   Box
 } from "@mui/material";
@@ -88,9 +87,7 @@ const AddSponsorDialog = ({ onClose, onSubmit, summitId }) => {
       disableEscapeKeyDown={isSaving}
     >
       <DialogTitle sx={{ display: "flex", justifyContent: "space-between" }}>
-        <Typography fontSize="1.5rem">
-          {T.translate("sponsor_list.add_sponsor")}
-        </Typography>
+        {T.translate("sponsor_list.add_sponsor")}
         <IconButton
           size="small"
           onClick={() => handleClose()}
diff --git a/src/pages/sponsors/popup/edit-tier-popup.js b/src/pages/sponsors/popup/edit-tier-popup.js
index 0c9461fb4..01aeaa18d 100644
--- a/src/pages/sponsors/popup/edit-tier-popup.js
+++ b/src/pages/sponsors/popup/edit-tier-popup.js
@@ -141,7 +141,7 @@ const EditTierDialog = ({
       disableEscapeKeyDown={isSaving}
     >
       <DialogTitle sx={{ display: "flex", justifyContent: "space-between" }}>
-        <Typography fontSize="1.5rem">
+        <Typography fontSize="1rem">
           {`${initialEntity.id ? "Edit" : "Add"} ${T.translate(
             "edit_summit_sponsorship.tier"
           )}`}
diff --git a/src/pages/sponsors/show-purchase-list-page/index.js b/src/pages/sponsors/show-purchase-list-page/index.js
index a9032036d..18d555ba6 100644
--- a/src/pages/sponsors/show-purchase-list-page/index.js
+++ b/src/pages/sponsors/show-purchase-list-page/index.js
@@ -245,7 +245,7 @@ const ShowPurchaseListPage = ({
             aria-label={T.translate("general.download_invoice")}
             disabled={downloadingOrderId !== null}
           >
-            <DownloadIcon fontSize="large" />
+            <DownloadIcon />
           </IconButton>
         )
     }
diff --git a/src/pages/sponsors/sponsor-form-item-list-page/components/sponsor-form-add-item-from-inventory-popup.js b/src/pages/sponsors/sponsor-form-item-list-page/components/sponsor-form-add-item-from-inventory-popup.js
index d5c07ab94..cd09fa780 100644
--- a/src/pages/sponsors/sponsor-form-item-list-page/components/sponsor-form-add-item-from-inventory-popup.js
+++ b/src/pages/sponsors/sponsor-form-item-list-page/components/sponsor-form-add-item-from-inventory-popup.js
@@ -180,7 +180,7 @@ const SponsorFormAddItemFromInventoryPopup = ({
           disabled={isSaving}
           data-testid="close-dialog"
         >
-          <CloseIcon fontSize="large" />
+          <CloseIcon />
         </IconButton>
       </DialogTitle>
       <Divider />
diff --git a/src/pages/sponsors/sponsor-forms-list-page/components/form-template/form-template-popup.js b/src/pages/sponsors/sponsor-forms-list-page/components/form-template/form-template-popup.js
index 916e52f8e..3d0a47564 100644
--- a/src/pages/sponsors/sponsor-forms-list-page/components/form-template/form-template-popup.js
+++ b/src/pages/sponsors/sponsor-forms-list-page/components/form-template/form-template-popup.js
@@ -94,7 +94,7 @@ const FormTemplatePopup = ({
           onClick={handleClose}
           disabled={isSaving}
         >
-          <CloseIcon fontSize="large" />
+          <CloseIcon />
         </IconButton>
       </DialogTitle>
       <Divider />
diff --git a/src/pages/sponsors/sponsor-forms-list-page/components/global-template/select-sponsorships-dialog.js b/src/pages/sponsors/sponsor-forms-list-page/components/global-template/select-sponsorships-dialog.js
index cc4321e2d..6d7a827a7 100644
--- a/src/pages/sponsors/sponsor-forms-list-page/components/global-template/select-sponsorships-dialog.js
+++ b/src/pages/sponsors/sponsor-forms-list-page/components/global-template/select-sponsorships-dialog.js
@@ -64,7 +64,7 @@ const SelectSponsorshipsDialog = ({
           {T.translate("sponsor_forms.sponsorships_popup.title")}
         </Typography>
         <IconButton size="large" sx={{ p: 0 }} onClick={() => handleClose()}>
-          <CloseIcon fontSize="large" />
+          <CloseIcon />
         </IconButton>
       </DialogTitle>
       <Divider />
diff --git a/src/pages/sponsors/sponsor-forms-list-page/components/global-template/select-templates-dialog.js b/src/pages/sponsors/sponsor-forms-list-page/components/global-template/select-templates-dialog.js
index 88fa8f07e..908070463 100644
--- a/src/pages/sponsors/sponsor-forms-list-page/components/global-template/select-templates-dialog.js
+++ b/src/pages/sponsors/sponsor-forms-list-page/components/global-template/select-templates-dialog.js
@@ -116,7 +116,7 @@ const SelectTemplatesDialog = ({
           {T.translate("sponsor_forms.global_template_popup.title")}
         </Typography>
         <IconButton size="large" sx={{ p: 0 }} onClick={() => handleClose()}>
-          <CloseIcon fontSize="large" />
+          <CloseIcon />
         </IconButton>
       </DialogTitle>
       <Divider />
diff --git a/src/pages/sponsors/sponsor-list-page.js b/src/pages/sponsors/sponsor-list-page.js
index 5cd427548..f89120916 100644
--- a/src/pages/sponsors/sponsor-list-page.js
+++ b/src/pages/sponsors/sponsor-list-page.js
@@ -111,9 +111,7 @@ const SponsorListPage = ({
       render: (row) =>
         row.sponsorships.map((s) => (
           <Box sx={{ display: "flex", alignItems: "center", gap: 1 }}>
-            <Typography
-              sx={{ fontSize: "1.4rem", mr: "15px", lineHeight: "2rem" }}
-            >
+            <Typography sx={{ mr: "15px", lineHeight: "1.25rem" }}>
               {s.type?.type?.name}
             </Typography>
             <Tooltip
@@ -148,7 +146,7 @@ const SponsorListPage = ({
                       minWidth: 20,
                       height: 20,
                       fontWeight: "500",
-                      fontSize: "1.2rem",
+                      fontSize: "0.75rem",
                       borderRadius: "100px",
                       ml: "10px"
                     }
diff --git a/src/pages/sponsors/sponsor-page/components/tab-nav.js b/src/pages/sponsors/sponsor-page/components/tab-nav.js
index cbe07d3dd..5fec2d68b 100644
--- a/src/pages/sponsors/sponsor-page/components/tab-nav.js
+++ b/src/pages/sponsors/sponsor-page/components/tab-nav.js
@@ -37,8 +37,6 @@ const TabNav = ({ currentSummit, sponsor, member, history, location }) => {
             value={tab.value}
             onClick={() => handleTabClick(tab)}
             sx={{
-              fontSize: "1.4rem",
-              lineHeight: "1.8rem",
               height: "36px",
               minHeight: "36px",
               px: 2,
diff --git a/src/pages/sponsors/sponsor-page/index.js b/src/pages/sponsors/sponsor-page/index.js
index b1e93748c..47591f989 100644
--- a/src/pages/sponsors/sponsor-page/index.js
+++ b/src/pages/sponsors/sponsor-page/index.js
@@ -60,9 +60,7 @@ const SponsorPage = ({
   return (
     <Box>
       <Container maxWidth="lg" sx={{ position: "relative" }}>
-        <Typography fontSize="3.4rem" variant="h4">
-          {entity.company?.name}
-        </Typography>
+        <Typography variant="h4">{entity.company?.name}</Typography>
         <Box sx={{ borderBottom: 1, borderColor: "divider", mt: 2 }}>
           <TabNav history={history} location={location} />
         </Box>
diff --git a/src/pages/sponsors/sponsor-page/tabs/sponsor-badge-scans/edit-badge-scan-popup.js b/src/pages/sponsors/sponsor-page/tabs/sponsor-badge-scans/edit-badge-scan-popup.js
index 096173188..16e0516cf 100644
--- a/src/pages/sponsors/sponsor-page/tabs/sponsor-badge-scans/edit-badge-scan-popup.js
+++ b/src/pages/sponsors/sponsor-page/tabs/sponsor-badge-scans/edit-badge-scan-popup.js
@@ -117,7 +117,7 @@ const EditBadgeScanPopup = ({ badgeScan, onClose, onSubmit }) => {
   return (
     <Dialog open onClose={handleClose} maxWidth="md" fullWidth>
       <DialogTitle sx={{ display: "flex", justifyContent: "space-between" }}>
-        <Typography fontSize="1.5rem">
+        <Typography fontSize="1rem">
           {T.translate("edit_badge_scan.edit_badge_scan")}
         </Typography>
         <IconButton size="small" onClick={() => handleClose()} sx={{ mr: 1 }}>
diff --git a/src/pages/sponsors/sponsor-page/tabs/sponsor-badge-scans/index.js b/src/pages/sponsors/sponsor-page/tabs/sponsor-badge-scans/index.js
index 7f9e48423..93af7c82f 100644
--- a/src/pages/sponsors/sponsor-page/tabs/sponsor-badge-scans/index.js
+++ b/src/pages/sponsors/sponsor-page/tabs/sponsor-badge-scans/index.js
@@ -182,9 +182,7 @@ const SponsorBadgeScans = ({
           startIcon={<AddIcon />}
           sx={{
             padding: "6px 16px",
-            fontSize: "1.4rem",
-            lineHeight: "2.4rem",
-            letterSpacing: "0.4px"
+            lineHeight: "1.5rem"
           }}
         >
           {T.translate("sponsor_badge_scans.add_manual_scan")}
@@ -195,9 +193,7 @@ const SponsorBadgeScans = ({
           startIcon={<DownloadIcon />}
           sx={{
             padding: "6px 16px",
-            fontSize: "1.4rem",
-            lineHeight: "2.4rem",
-            letterSpacing: "0.4px"
+            lineHeight: "1.5rem"
           }}
         >
           {T.translate("sponsor_badge_scans.export")}
diff --git a/src/pages/sponsors/sponsor-page/tabs/sponsor-cart-tab/components/cart-note/index.js b/src/pages/sponsors/sponsor-page/tabs/sponsor-cart-tab/components/cart-note/index.js
index 3333a5c1d..902231fc1 100644
--- a/src/pages/sponsors/sponsor-page/tabs/sponsor-cart-tab/components/cart-note/index.js
+++ b/src/pages/sponsors/sponsor-page/tabs/sponsor-cart-tab/components/cart-note/index.js
@@ -151,7 +151,7 @@ const CartNote = ({
                   onClick={() => handleEdit(notes?.[0])}
                   disabled={!canEdit}
                 >
-                  <EditIcon fontSize="large" />
+                  <EditIcon />
                 </IconButton>
               )}
               <IconButton
@@ -159,7 +159,7 @@ const CartNote = ({
                 disabled={!canDelete || !onDelete}
                 onClick={() => handleDelete(note.id)}
               >
-                <DeleteIcon fontSize="large" />
+                <DeleteIcon />
               </IconButton>
             </Box>
           </Card>
diff --git a/src/pages/sponsors/sponsor-page/tabs/sponsor-cart-tab/components/cart-view.js b/src/pages/sponsors/sponsor-page/tabs/sponsor-cart-tab/components/cart-view.js
index a99395d59..3a2110255 100644
--- a/src/pages/sponsors/sponsor-page/tabs/sponsor-cart-tab/components/cart-view.js
+++ b/src/pages/sponsors/sponsor-page/tabs/sponsor-cart-tab/components/cart-view.js
@@ -184,11 +184,7 @@ const CartView = ({
       align: "right",
       render: (row) => (
         <IconButton size="large" onClick={() => handleLock(row)}>
-          {row.is_locked ? (
-            <LockClosedIcon fontSize="large" />
-          ) : (
-            <LockOpenIcon fontSize="large" />
-          )}
+          {row.is_locked ? <LockClosedIcon /> : <LockOpenIcon />}
         </IconButton>
       )
     }
diff --git a/src/pages/sponsors/sponsor-page/tabs/sponsor-cart-tab/components/select-form-dialog/index.js b/src/pages/sponsors/sponsor-page/tabs/sponsor-cart-tab/components/select-form-dialog/index.js
index 2d9c2fdd2..b9772abc5 100644
--- a/src/pages/sponsors/sponsor-page/tabs/sponsor-cart-tab/components/select-form-dialog/index.js
+++ b/src/pages/sponsors/sponsor-page/tabs/sponsor-cart-tab/components/select-form-dialog/index.js
@@ -116,7 +116,7 @@ const SelectFormDialog = ({
           {T.translate("edit_sponsor.cart_tab.add_form_to_cart")}
         </Typography>
         <IconButton size="large" sx={{ p: 0 }} onClick={handleClose}>
-          <CloseIcon fontSize="large" />
+          <CloseIcon />
         </IconButton>
       </DialogTitle>
       <Divider />
diff --git a/src/pages/sponsors/sponsor-page/tabs/sponsor-forms-tab/components/add-sponsor-form-template-popup/index.js b/src/pages/sponsors/sponsor-page/tabs/sponsor-forms-tab/components/add-sponsor-form-template-popup/index.js
index f8fbbe4d1..ac2232962 100644
--- a/src/pages/sponsors/sponsor-page/tabs/sponsor-forms-tab/components/add-sponsor-form-template-popup/index.js
+++ b/src/pages/sponsors/sponsor-page/tabs/sponsor-forms-tab/components/add-sponsor-form-template-popup/index.js
@@ -181,7 +181,7 @@ const AddSponsorFormTemplatePopup = ({
       disableRestoreFocus
     >
       <DialogTitle sx={{ display: "flex", justifyContent: "space-between" }}>
-        <Typography fontSize="1.5rem">
+        <Typography fontSize="1rem">
           {T.translate("edit_sponsor.forms_tab.add_form_using_template")}
         </Typography>
         <IconButton
@@ -241,7 +241,7 @@ const AddSponsorFormTemplatePopup = ({
                       }
                     ]}
                   >
-                    <SwapVertIcon fontSize="large" sx={{ mr: 1 }} />{" "}
+                    <SwapVertIcon sx={{ mr: 1 }} />{" "}
                     {T.translate("general.sort_by")}
                   </MenuButton>
                 </Grid2>
diff --git a/src/pages/sponsors/sponsor-page/tabs/sponsor-forms-tab/components/customized-form/customized-form-popup.js b/src/pages/sponsors/sponsor-page/tabs/sponsor-forms-tab/components/customized-form/customized-form-popup.js
index 18edd52f8..60ef006cc 100644
--- a/src/pages/sponsors/sponsor-page/tabs/sponsor-forms-tab/components/customized-form/customized-form-popup.js
+++ b/src/pages/sponsors/sponsor-page/tabs/sponsor-forms-tab/components/customized-form/customized-form-popup.js
@@ -106,7 +106,7 @@ const CustomizedFormPopup = ({
           onClick={handleClose}
           disabled={isSaving}
         >
-          <CloseIcon fontSize="large" />
+          <CloseIcon />
         </IconButton>
       </DialogTitle>
       <Divider />
diff --git a/src/pages/sponsors/sponsor-page/tabs/sponsor-forms-tab/components/manage-items/sponsor-form-item-from-inventory.js b/src/pages/sponsors/sponsor-page/tabs/sponsor-forms-tab/components/manage-items/sponsor-form-item-from-inventory.js
index 058f282b6..ba20ea783 100644
--- a/src/pages/sponsors/sponsor-page/tabs/sponsor-forms-tab/components/manage-items/sponsor-form-item-from-inventory.js
+++ b/src/pages/sponsors/sponsor-page/tabs/sponsor-forms-tab/components/manage-items/sponsor-form-item-from-inventory.js
@@ -182,7 +182,7 @@ const SponsorFormItemFromInventoryPopup = ({
           )}
         </Typography>
         <IconButton size="large" sx={{ p: 0 }} onClick={() => handleClose()}>
-          <CloseIcon fontSize="large" />
+          <CloseIcon />
         </IconButton>
       </DialogTitle>
       <Divider />
@@ -213,8 +213,7 @@ const SponsorFormItemFromInventoryPopup = ({
                 }
               ]}
             >
-              <SwapVertIcon fontSize="large" sx={{ mr: 1 }} />{" "}
-              {T.translate("general.sort_by")}
+              <SwapVertIcon sx={{ mr: 1 }} /> {T.translate("general.sort_by")}
             </MenuButton>
           </GridToolbar>
           <Box>
diff --git a/src/pages/sponsors/sponsor-page/tabs/sponsor-forms-tab/index.js b/src/pages/sponsors/sponsor-page/tabs/sponsor-forms-tab/index.js
index a768aa844..4feae77f8 100644
--- a/src/pages/sponsors/sponsor-page/tabs/sponsor-forms-tab/index.js
+++ b/src/pages/sponsors/sponsor-page/tabs/sponsor-forms-tab/index.js
@@ -383,7 +383,7 @@ const SponsorFormsTab = ({
           onClick={() => handleCustomizeForm(row)}
         >
           {T.translate("edit_sponsor.forms_tab.customize")}
-          <ArrowForwardIcon fontSize="large" sx={{ marginLeft: 1, px: 0 }} />
+          <ArrowForwardIcon sx={{ marginLeft: 1, px: 0 }} />
         </Button>
       ),
       dottedBorder: true
diff --git a/src/pages/sponsors/sponsor-page/tabs/sponsor-general-form/add-extra-question-popup.js b/src/pages/sponsors/sponsor-page/tabs/sponsor-general-form/add-extra-question-popup.js
index 4965582ba..e09689c70 100644
--- a/src/pages/sponsors/sponsor-page/tabs/sponsor-general-form/add-extra-question-popup.js
+++ b/src/pages/sponsors/sponsor-page/tabs/sponsor-general-form/add-extra-question-popup.js
@@ -320,7 +320,7 @@ const AddSponsorExtraQuestionPopup = ({
   return (
     <Dialog open onClose={handleClose} maxWidth="md" fullWidth>
       <DialogTitle sx={{ display: "flex", justifyContent: "space-between" }}>
-        <Typography fontSize="1.5rem">
+        <Typography fontSize="1rem">
           {extraQuestion.id
             ? T.translate("edit_sponsor.edit_extra_question")
             : T.translate("edit_sponsor.add_extra_question")}
@@ -519,7 +519,7 @@ const AddSponsorExtraQuestionPopup = ({
                         formik.submitCount > 0 && (
                           <Typography
                             color="error"
-                            fontSize="1.2rem"
+                            fontSize="0.75rem"
                             sx={{ mt: 0.5, ml: 2 }}
                           >
                             {formik.errors.values}
@@ -602,8 +602,8 @@ const AddSponsorExtraQuestionPopup = ({
                           sx: {
                             fontFamily: "Roboto",
                             fontWeight: 400,
-                            fontSize: "1.2rem",
-                            lineHeight: "1.6rem",
+                            fontSize: "0.75rem",
+                            lineHeight: "1rem",
                             letterSpacing: "0%",
                             textAlign: "center",
                             display: "flex",
@@ -619,9 +619,8 @@ const AddSponsorExtraQuestionPopup = ({
                     >
                       <IconButton size="small" disableRipple>
                         <InfoIcon
+                          fontSize="small"
                           sx={{
-                            width: 20,
-                            height: 20,
                             "&:hover": {
                               color: "#2196F3"
                             }
diff --git a/src/pages/sponsors/sponsor-page/tabs/sponsor-general-form/add-tier-popup.js b/src/pages/sponsors/sponsor-page/tabs/sponsor-general-form/add-tier-popup.js
index 30e1b4f1d..f9e75cafc 100644
--- a/src/pages/sponsors/sponsor-page/tabs/sponsor-general-form/add-tier-popup.js
+++ b/src/pages/sponsors/sponsor-page/tabs/sponsor-general-form/add-tier-popup.js
@@ -70,7 +70,7 @@ const AddTierPopup = ({ sponsor, onClose, onSubmit, summitId }) => {
   return (
     <Dialog open onClose={handleClose} maxWidth="xs" fullWidth>
       <DialogTitle sx={{ display: "flex", justifyContent: "space-between" }}>
-        <Typography fontSize="1.5rem">
+        <Typography fontSize="1rem">
           {T.translate("edit_sponsor.add_tier")}
         </Typography>
         <IconButton size="small" onClick={() => handleClose()} sx={{ mr: 1 }}>
diff --git a/src/pages/sponsors/sponsor-page/tabs/sponsor-general-form/badge-scan-settings.js b/src/pages/sponsors/sponsor-page/tabs/sponsor-general-form/badge-scan-settings.js
index fdd353f77..30b48d6b7 100644
--- a/src/pages/sponsors/sponsor-page/tabs/sponsor-general-form/badge-scan-settings.js
+++ b/src/pages/sponsors/sponsor-page/tabs/sponsor-general-form/badge-scan-settings.js
@@ -63,8 +63,8 @@ const BadgeScanSettings = ({
             sx={{
               fontWeight: "500",
               letterSpacing: "0.15px",
-              fontSize: "2rem",
-              lineHeight: "1.6rem"
+              fontSize: "1.25rem",
+              lineHeight: "1rem"
             }}
           >
             {T.translate("edit_sponsor.badge_scan_settings")}
@@ -78,7 +78,7 @@ const BadgeScanSettings = ({
             sx={{
               fontWeight: "400",
               letterSpacing: "0.15px",
-              fontSize: "1.6rem",
+              fontSize: "1rem",
               lineHeight: "150%",
               textTransform: "lowercase"
             }}
diff --git a/src/pages/sponsors/sponsor-page/tabs/sponsor-general-form/extra-questions.js b/src/pages/sponsors/sponsor-page/tabs/sponsor-general-form/extra-questions.js
index 6034b3f02..820cf9704 100644
--- a/src/pages/sponsors/sponsor-page/tabs/sponsor-general-form/extra-questions.js
+++ b/src/pages/sponsors/sponsor-page/tabs/sponsor-general-form/extra-questions.js
@@ -132,8 +132,8 @@ const SponsorExtraQuestions = ({
               sx={{
                 fontWeight: "500",
                 letterSpacing: "0.15px",
-                fontSize: "2rem",
-                lineHeight: "1.6rem"
+                fontSize: "1.25rem",
+                lineHeight: "1rem"
               }}
             >
               {T.translate("edit_sponsor.extra_questions")}
@@ -150,8 +150,8 @@ const SponsorExtraQuestions = ({
             <Box
               sx={{
                 p: 2,
-                fontSize: "1.2rem",
-                lineHeight: "1.5rem",
+                fontSize: "0.75rem",
+                lineHeight: "1rem",
                 color: "#1E88E5",
                 backgroundColor: "#03A9F41A"
               }}
@@ -170,7 +170,7 @@ const SponsorExtraQuestions = ({
               sx={{
                 fontWeight: "400",
                 letterSpacing: "0.15px",
-                fontSize: "1.6rem",
+                fontSize: "1rem",
                 lineHeight: "150%",
                 textTransform: "lowercase"
               }}
diff --git a/src/pages/sponsors/sponsor-page/tabs/sponsor-general-form/manage-tier-addons-popup.js b/src/pages/sponsors/sponsor-page/tabs/sponsor-general-form/manage-tier-addons-popup.js
index bc60ec847..801dbdccc 100644
--- a/src/pages/sponsors/sponsor-page/tabs/sponsor-general-form/manage-tier-addons-popup.js
+++ b/src/pages/sponsors/sponsor-page/tabs/sponsor-general-form/manage-tier-addons-popup.js
@@ -168,10 +168,10 @@ const ManageTierAddonsPopup = ({
 
   return (
     <Dialog open onClose={handleClose} maxWidth="sm" fullWidth>
-      <DialogTitle sx={{ display: "flex", justifyContent: "space-between" }}>
-        <Typography fontSize="2.4rem">
-          {T.translate("edit_sponsor.manage_addons")}
-        </Typography>
+      <DialogTitle
+        sx={{ display: "flex", justifyContent: "space-between", p: 2 }}
+      >
+        {T.translate("edit_sponsor.manage_addons")}
         <IconButton size="small" onClick={() => handleClose()} sx={{ mr: 1 }}>
           <CloseIcon fontSize="small" />
         </IconButton>
@@ -188,10 +188,8 @@ const ManageTierAddonsPopup = ({
             <Typography
               sx={{
                 py: 2,
-                fontSize: "2rem",
-                fontWeight: "500",
-                lineHeight: "1.6rem",
-                letterSpacing: "0.15px"
+                fontSize: "1rem",
+                fontWeight: "500"
               }}
             >
               {`${sponsorship.tier} ${T.translate("edit_sponsor.sponsorship")}`}
diff --git a/src/pages/sponsors/sponsor-page/tabs/sponsor-general-form/sponsorship.js b/src/pages/sponsors/sponsor-page/tabs/sponsor-general-form/sponsorship.js
index 0d32c6722..0e3f81c19 100644
--- a/src/pages/sponsors/sponsor-page/tabs/sponsor-general-form/sponsorship.js
+++ b/src/pages/sponsors/sponsor-page/tabs/sponsor-general-form/sponsorship.js
@@ -125,9 +125,8 @@ const Sponsorship = ({
           size="small"
           onClick={() => handleOpenManageAddonsPopup(row)}
           sx={{
-            fontSize: "1.3rem",
-            fontWeight: 500,
-            lineHeight: "2.2rem",
+            fontSize: "0.875rem",
+            lineHeight: "1.375rem",
             padding: "4px 5px"
           }}
         >
@@ -151,8 +150,8 @@ const Sponsorship = ({
               sx={{
                 fontWeight: "500",
                 letterSpacing: "0.15px",
-                fontSize: "2rem",
-                lineHeight: "1.6rem"
+                fontSize: "1.25rem",
+                lineHeight: "1rem"
               }}
             >
               {T.translate("edit_sponsor.sponsorship")}
diff --git a/src/pages/sponsors/sponsor-page/tabs/sponsor-media-upload-tab/index.js b/src/pages/sponsors/sponsor-page/tabs/sponsor-media-upload-tab/index.js
index f4d8d5fc6..1fdb51f43 100644
--- a/src/pages/sponsors/sponsor-page/tabs/sponsor-media-upload-tab/index.js
+++ b/src/pages/sponsors/sponsor-page/tabs/sponsor-media-upload-tab/index.js
@@ -203,7 +203,7 @@ const SponsorMediaUploadTab = ({
               disabled={viewDisabled}
               onClick={() => handleView(row)}
             >
-              <VisibilityIcon fontSize="large" />
+              <VisibilityIcon />
             </IconButton>
           );
         }
@@ -219,7 +219,7 @@ const SponsorMediaUploadTab = ({
             disabled={row.mu_type === "text" || !row.media_upload}
             onClick={() => handleDownload(row)}
           >
-            <DownloadIcon fontSize="large" />
+            <DownloadIcon />
           </IconButton>
         )
       },
@@ -232,13 +232,13 @@ const SponsorMediaUploadTab = ({
           if (row.media_upload) {
             return (
               <IconButton size="large" onClick={() => handleDelete(row)}>
-                <DeleteIcon fontSize="large" />
+                <DeleteIcon />
               </IconButton>
             );
           }
           return (
             <IconButton size="large" onClick={() => handleUpload(row)}>
-              <ArrowUpwardIcon fontSize="large" />
+              <ArrowUpwardIcon />
             </IconButton>
           );
         }
diff --git a/src/pages/sponsors/sponsor-page/tabs/sponsor-pages-tab/components/add-sponsor-page-template-popup/index.js b/src/pages/sponsors/sponsor-page/tabs/sponsor-pages-tab/components/add-sponsor-page-template-popup/index.js
index 4b9df9355..e1149c856 100644
--- a/src/pages/sponsors/sponsor-page/tabs/sponsor-pages-tab/components/add-sponsor-page-template-popup/index.js
+++ b/src/pages/sponsors/sponsor-page/tabs/sponsor-pages-tab/components/add-sponsor-page-template-popup/index.js
@@ -204,7 +204,7 @@ const AddSponsorPageTemplatePopup = ({
       disableEscapeKeyDown={isSaving}
     >
       <DialogTitle sx={{ display: "flex", justifyContent: "space-between" }}>
-        <Typography fontSize="1.5rem">
+        <Typography fontSize="1rem">
           {T.translate("edit_sponsor.pages_tab.add_page_using_template")}
         </Typography>
         <IconButton
@@ -271,7 +271,7 @@ const AddSponsorPageTemplatePopup = ({
                       }
                     ]}
                   >
-                    <SwapVertIcon fontSize="large" sx={{ mr: 1 }} />{" "}
+                    <SwapVertIcon sx={{ mr: 1 }} />{" "}
                     {T.translate("general.sort_by")}
                   </MenuButton>
                 </Grid2>
diff --git a/src/pages/sponsors/sponsor-page/tabs/sponsor-pages-tab/index.js b/src/pages/sponsors/sponsor-page/tabs/sponsor-pages-tab/index.js
index 5f12521e9..501c88744 100644
--- a/src/pages/sponsors/sponsor-page/tabs/sponsor-pages-tab/index.js
+++ b/src/pages/sponsors/sponsor-page/tabs/sponsor-pages-tab/index.js
@@ -341,7 +341,7 @@ const SponsorPagesTab = ({
           onClick={() => handleManagedEdit(row)}
         >
           {T.translate("edit_sponsor.forms_tab.customize")}
-          <ArrowForwardIcon fontSize="large" sx={{ marginLeft: 1 }} />
+          <ArrowForwardIcon sx={{ marginLeft: 1 }} />
         </Button>
       ),
       dottedBorder: true
diff --git a/src/pages/sponsors/sponsor-page/tabs/sponsor-purchases-tab/index.js b/src/pages/sponsors/sponsor-page/tabs/sponsor-purchases-tab/index.js
index ac719c0db..41500b099 100644
--- a/src/pages/sponsors/sponsor-page/tabs/sponsor-purchases-tab/index.js
+++ b/src/pages/sponsors/sponsor-page/tabs/sponsor-purchases-tab/index.js
@@ -222,7 +222,7 @@ const SponsorPurchasesTab = ({
             aria-label={T.translate("general.download_invoice")}
             disabled={downloadingOrderId !== null}
           >
-            <DownloadIcon fontSize="large" />
+            <DownloadIcon />
           </IconButton>
         )
     }
diff --git a/src/pages/sponsors/sponsor-page/tabs/sponsor-users-list-per-sponsor/components/edit-user-popup.js b/src/pages/sponsors/sponsor-page/tabs/sponsor-users-list-per-sponsor/components/edit-user-popup.js
index 56646baca..e6aabc7df 100644
--- a/src/pages/sponsors/sponsor-page/tabs/sponsor-users-list-per-sponsor/components/edit-user-popup.js
+++ b/src/pages/sponsors/sponsor-page/tabs/sponsor-users-list-per-sponsor/components/edit-user-popup.js
@@ -47,7 +47,7 @@ const EditUserPopup = ({
           {T.translate("sponsor_users.edit_user.title")}
         </Typography>
         <IconButton size="large" sx={{ p: 0 }} onClick={handleClose}>
-          <CloseIcon fontSize="large" />
+          <CloseIcon />
         </IconButton>
       </DialogTitle>
       <Divider />
diff --git a/src/pages/sponsors/sponsor-page/tabs/sponsor-users-list-per-sponsor/components/import-users-popup.js b/src/pages/sponsors/sponsor-page/tabs/sponsor-users-list-per-sponsor/components/import-users-popup.js
index 496be723e..6abaaac09 100644
--- a/src/pages/sponsors/sponsor-page/tabs/sponsor-users-list-per-sponsor/components/import-users-popup.js
+++ b/src/pages/sponsors/sponsor-page/tabs/sponsor-users-list-per-sponsor/components/import-users-popup.js
@@ -92,7 +92,7 @@ const ImportUsersPopup = ({
           {T.translate("sponsor_users.import_users.title")}
         </Typography>
         <IconButton size="large" sx={{ p: 0 }} onClick={handleClose}>
-          <CloseIcon fontSize="large" />
+          <CloseIcon />
         </IconButton>
       </DialogTitle>
       <Divider />
diff --git a/src/pages/sponsors/sponsor-page/tabs/sponsor-users-list-per-sponsor/components/new-user-popup.js b/src/pages/sponsors/sponsor-page/tabs/sponsor-users-list-per-sponsor/components/new-user-popup.js
index 1d2e57658..4948d5568 100644
--- a/src/pages/sponsors/sponsor-page/tabs/sponsor-users-list-per-sponsor/components/new-user-popup.js
+++ b/src/pages/sponsors/sponsor-page/tabs/sponsor-users-list-per-sponsor/components/new-user-popup.js
@@ -80,7 +80,7 @@ const NewUserPopup = ({
           onClick={handleClose}
           disabled={isSaving}
         >
-          <CloseIcon fontSize="large" />
+          <CloseIcon />
         </IconButton>
       </DialogTitle>
       <Divider />
diff --git a/src/pages/sponsors/sponsor-page/tabs/sponsor-users-list-per-sponsor/components/process-request-popup.js b/src/pages/sponsors/sponsor-page/tabs/sponsor-users-list-per-sponsor/components/process-request-popup.js
index ecdab0e0e..6d07707f8 100644
--- a/src/pages/sponsors/sponsor-page/tabs/sponsor-users-list-per-sponsor/components/process-request-popup.js
+++ b/src/pages/sponsors/sponsor-page/tabs/sponsor-users-list-per-sponsor/components/process-request-popup.js
@@ -85,7 +85,7 @@ const ProcessRequestPopup = ({
           {T.translate("sponsor_users.process_request.title")}
         </Typography>
         <IconButton size="large" sx={{ p: 0 }} onClick={handleClose}>
-          <CloseIcon fontSize="large" />
+          <CloseIcon />
         </IconButton>
       </DialogTitle>
       <Divider />
diff --git a/src/pages/sponsors/sponsor-users-list-page/components/edit-user-popup/index.js b/src/pages/sponsors/sponsor-users-list-page/components/edit-user-popup/index.js
index b3d0630d5..98061b7ae 100644
--- a/src/pages/sponsors/sponsor-users-list-page/components/edit-user-popup/index.js
+++ b/src/pages/sponsors/sponsor-users-list-page/components/edit-user-popup/index.js
@@ -47,7 +47,7 @@ const EditUserPopup = ({
           {T.translate("sponsor_users.edit_user.title")}
         </Typography>
         <IconButton size="large" sx={{ p: 0 }} onClick={handleClose}>
-          <CloseIcon fontSize="large" />
+          <CloseIcon />
         </IconButton>
       </DialogTitle>
       <Divider />
diff --git a/src/pages/sponsors/sponsor-users-list-page/components/edit-user-popup/sponsor-section.js b/src/pages/sponsors/sponsor-users-list-page/components/edit-user-popup/sponsor-section.js
index b0987c41c..5c618fe02 100644
--- a/src/pages/sponsors/sponsor-users-list-page/components/edit-user-popup/sponsor-section.js
+++ b/src/pages/sponsors/sponsor-users-list-page/components/edit-user-popup/sponsor-section.js
@@ -58,7 +58,7 @@ const SponsorSection = ({
             "&:hover": { bgcolor: "action.disabled" }
           }}
         >
-          <DeleteIcon fontSize="large" />
+          <DeleteIcon />
         </IconButton>
         {onAdd && (
           <IconButton
@@ -71,7 +71,7 @@ const SponsorSection = ({
               "&:hover": { bgcolor: "primary.dark" }
             }}
           >
-            <AddIcon fontSize="large" />
+            <AddIcon />
           </IconButton>
         )}
       </Box>
diff --git a/src/pages/sponsors/sponsor-users-list-page/components/process-request-popup.js b/src/pages/sponsors/sponsor-users-list-page/components/process-request-popup.js
index dd359c562..e55d05bb9 100644
--- a/src/pages/sponsors/sponsor-users-list-page/components/process-request-popup.js
+++ b/src/pages/sponsors/sponsor-users-list-page/components/process-request-popup.js
@@ -55,7 +55,7 @@ const ProcessRequestPopup = ({
           {T.translate("sponsor_users.process_request.title")}
         </Typography>
         <IconButton size="large" sx={{ p: 0 }} onClick={handleClose}>
-          <CloseIcon fontSize="large" />
+          <CloseIcon />
         </IconButton>
       </DialogTitle>
       <Divider />
diff --git a/src/pages/sponsors/sponsor-users-list-page/components/request-table.js b/src/pages/sponsors/sponsor-users-list-page/components/request-table.js
index 70c707b61..656ba383a 100644
--- a/src/pages/sponsors/sponsor-users-list-page/components/request-table.js
+++ b/src/pages/sponsors/sponsor-users-list-page/components/request-table.js
@@ -63,7 +63,7 @@ const RequestTable = ({ requests, term, getRequests, onRequestDelete }) => {
       align: "center",
       render: (row) => (
         <IconButton size="large" onClick={() => handleProcessRequest(row)}>
-          <ArrowForwardIcon fontSize="large" />
+          <ArrowForwardIcon />
         </IconButton>
       ),
       dottedBorder: true
diff --git a/src/pages/sponsors/sponsor-users-list-page/components/sponsor-global-import-users-popup.js b/src/pages/sponsors/sponsor-users-list-page/components/sponsor-global-import-users-popup.js
index 2a4886017..dcd903f26 100644
--- a/src/pages/sponsors/sponsor-users-list-page/components/sponsor-global-import-users-popup.js
+++ b/src/pages/sponsors/sponsor-users-list-page/components/sponsor-global-import-users-popup.js
@@ -177,7 +177,7 @@ const SponsorGlobalImportUsersPopup = ({
           onClick={handleClose}
           disabled={isSaving}
         >
-          <CloseIcon fontSize="large" />
+          <CloseIcon />
         </IconButton>
       </DialogTitle>
       <Divider />
diff --git a/src/pages/sponsors/sponsor-users-list-page/components/sponsor-global-new-user-popup.js b/src/pages/sponsors/sponsor-users-list-page/components/sponsor-global-new-user-popup.js
index 522bd2140..02ff48164 100644
--- a/src/pages/sponsors/sponsor-users-list-page/components/sponsor-global-new-user-popup.js
+++ b/src/pages/sponsors/sponsor-users-list-page/components/sponsor-global-new-user-popup.js
@@ -75,7 +75,7 @@ const SponsorGlobalNewUserPopup = ({ onClose, summitId, onSave }) => {
           onClick={handleClose}
           disabled={isSaving}
         >
-          <CloseIcon fontSize="large" />
+          <CloseIcon />
         </IconButton>
       </DialogTitle>
       <Divider />
diff --git a/src/pages/sponsors/sponsor-users-list-page/components/users-table.js b/src/pages/sponsors/sponsor-users-list-page/components/users-table.js
index 74df0520c..279c810d4 100644
--- a/src/pages/sponsors/sponsor-users-list-page/components/users-table.js
+++ b/src/pages/sponsors/sponsor-users-list-page/components/users-table.js
@@ -74,7 +74,7 @@ const UsersTable = ({
       align: "center",
       render: (row) => (
         <IconButton size="large" onClick={() => handleSendEmail(row)}>
-          <MailOutlineIcon fontSize="large" />
+          <MailOutlineIcon />
         </IconButton>
       ),
       dottedBorder: true
diff --git a/src/pages/summits/components/summit-dashboard-stat.js b/src/pages/summits/components/summit-dashboard-stat.js
index 687b23fbc..1a72d9345 100644
--- a/src/pages/summits/components/summit-dashboard-stat.js
+++ b/src/pages/summits/components/summit-dashboard-stat.js
@@ -9,7 +9,9 @@ function SummitDashboardStat({ label, value }) {
       <Typography variant="body2" color="text.secondary" gutterBottom>
         {label}
       </Typography>
-      <Typography variant="h3">{value}</Typography>
+      <Typography variant="body1" sx={{ fontSize: "2rem", lineHeight: "1rem" }}>
+        {value}
+      </Typography>
     </Box>
   );
 }
diff --git a/src/pages/taxes/popup/tax-type-popup.js b/src/pages/taxes/popup/tax-type-popup.js
index c867d300d..96b27fb5d 100644
--- a/src/pages/taxes/popup/tax-type-popup.js
+++ b/src/pages/taxes/popup/tax-type-popup.js
@@ -6,7 +6,6 @@ import DialogTitle from "@mui/material/DialogTitle";
 import DialogContent from "@mui/material/DialogContent";
 import IconButton from "@mui/material/IconButton";
 import Divider from "@mui/material/Divider";
-import Typography from "@mui/material/Typography";
 import CloseIcon from "@mui/icons-material/Close";
 import TaxTypeForm from "../../../components/forms/tax-type-form";
 
@@ -47,9 +46,7 @@ const TaxTypePopup = ({
       fullWidth
     >
       <DialogTitle sx={{ display: "flex", justifyContent: "space-between" }}>
-        <Typography fontSize="1.8rem">
-          {title} {T.translate("edit_tax_type.tax_type")}
-        </Typography>
+        {title} {T.translate("edit_tax_type.tax_type")}
         <IconButton size="small" onClick={handleClose} disabled={isSaving}>
           <CloseIcon fontSize="small" />
         </IconButton>
diff --git a/src/pages/tickets/payment-profile/components/payment-profile-dialog.js b/src/pages/tickets/payment-profile/components/payment-profile-dialog.js
index d7de254f8..2bec371ea 100644
--- a/src/pages/tickets/payment-profile/components/payment-profile-dialog.js
+++ b/src/pages/tickets/payment-profile/components/payment-profile-dialog.js
@@ -36,9 +36,9 @@ const InfoTooltip = ({ title }) => (
   <Tooltip
     title={title}
     placement="top"
-    componentsProps={{ tooltip: { sx: { fontSize: "1rem" } } }}
+    componentsProps={{ tooltip: { sx: { fontSize: "0.625rem" } } }}
   >
-    <InfoIcon sx={{ ml: 0.5, verticalAlign: "middle" }} />
+    <InfoIcon fontSize="small" sx={{ ml: 0.5, verticalAlign: "middle" }} />
   </Tooltip>
 );
 
@@ -448,8 +448,7 @@ const PaymentProfileDialog = ({
                           onClick={handleNewFeeType}
                           startIcon={<AddIcon />}
                           sx={{
-                            lineHeight: "2.4rem",
-                            letterSpacing: "0.4px"
+                            lineHeight: "1.5rem"
                           }}
                         >
                           {T.translate("edit_payment_profile.new_fee_type")}
@@ -638,8 +637,7 @@ const PaymentProfileDialog = ({
                             variant="outlined"
                             onClick={handleCancelFeeType}
                             sx={{
-                              lineHeight: "2.4rem",
-                              letterSpacing: "0.4px"
+                              lineHeight: "1.5rem"
                             }}
                           >
                             {T.translate("general.cancel")}
@@ -649,8 +647,7 @@ const PaymentProfileDialog = ({
                             onClick={feeTypeFormik.handleSubmit}
                             disabled={isSaving}
                             sx={{
-                              lineHeight: "2.4rem",
-                              letterSpacing: "0.4px"
+                              lineHeight: "1.5rem"
                             }}
                           >
                             {T.translate("edit_payment_profile.save_fee_type")}
diff --git a/src/pages/track_chairs/components/track-chair-dialog.js b/src/pages/track_chairs/components/track-chair-dialog.js
index c8e92c0a0..9b09a611c 100644
--- a/src/pages/track_chairs/components/track-chair-dialog.js
+++ b/src/pages/track_chairs/components/track-chair-dialog.js
@@ -106,7 +106,7 @@ const TrackChairDialog = ({ entity, tracks, onSave, onClose }) => {
       disableEscapeKeyDown={isSaving}
     >
       <DialogTitle sx={{ display: "flex", justifyContent: "space-between" }}>
-        <Typography fontSize="1.5rem">{title}</Typography>
+        <Typography fontSize="1rem">{title}</Typography>
         <IconButton
           size="small"
           onClick={handleOnClose}
diff --git a/src/styles/general.less b/src/styles/general.less
index 01b906615..da83f49a6 100644
--- a/src/styles/general.less
+++ b/src/styles/general.less
@@ -1,3 +1,8 @@
+// overrides Bootstrap 3's 10px root; MuiBaseCustomTheme's htmlFontSize must match it
+html {
+  font-size: 16px;
+}
+
 .container.large {
   width: 95%;
 }
@@ -89,7 +94,7 @@ h3 {
 }
 
 .swal2-popup {
-  font-size: 1.6rem !important;
+  font-size: 1rem !important;
 }
 
 .summit-dropdown {
diff --git a/yarn.lock b/yarn.lock
index ae01310da..98eed22b3 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -9042,10 +9042,10 @@ open@^10.0.3:
     is-inside-container "^1.0.0"
     wsl-utils "^0.1.0"
 
-openstack-uicore-foundation@5.0.67:
-  version "5.0.67"
-  resolved "https://registry.npmjs.org/openstack-uicore-foundation/-/openstack-uicore-foundation-5.0.67.tgz#e0453674c4c4ecec09ffdac3fdb66dfe22e17f64"
-  integrity sha512-VbtFmBDcPgfKVZD5PXHH/eTGpFtovyW29pQKvLNrSZYeRzqyS8eanJwRlBAc9h132mL9hy4Ff25jHWnHnCo3EQ==
+openstack-uicore-foundation@5.0.70:
+  version "5.0.70"
+  resolved "https://registry.yarnpkg.com/openstack-uicore-foundation/-/openstack-uicore-foundation-5.0.70.tgz#46b203aa0ac57db421e09c0f8f9b06a8ffd97f51"
+  integrity sha512-5KNhmFTFVpN6flqO4PI3TxrTF0Jl2+rqLLvpIwFoJBUVw9MolPG0NSwh4jXy3hOfJgmxD5OE+IHAehNsQ/UseQ==
   dependencies:
     use-sync-external-store "^1.6.0"