New source found from dndbeyond.com

ddb_main/tools/js/CharacterSheet/containers/tablet/EquipmentTablet/EquipmentTablet.tsx

@@ -1,4 +1,3 @@
-import { visuallyHidden } from "@mui/utils";
 import React from "react";
 import { connect } from "react-redux";
 
@@ -8,6 +7,7 @@ import {
 } from "@dndbeyond/character-rules-engine/es";
 
 import { PaneInfo, useSidebar } from "~/contexts/Sidebar/Sidebar";
+import a11yStyles from "~/styles/accessibility.module.css";
 import { PaneComponentEnum } from "~/subApps/sheet/components/Sidebar/types";
 
 import { appEnvSelectors } from "../../../../Shared/selectors";
@@ -43,7 +43,7 @@ class EquipmentTablet extends React.PureComponent<Props> {
           theme={theme}
         >
           <section>
-            <h2 style={visuallyHidden}>Inventory</h2>
+            <h2 className={a11yStyles.screenreaderOnly}>Inventory</h2>
             <Equipment />
           </section>
         </TabletBox>