New source found from dndbeyond.com

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

@@ -1,7 +1,7 @@
-import { visuallyHidden } from "@mui/utils";
 import { FC } from "react";
 
 import { useCharacterEngine } from "~/hooks/useCharacterEngine";
+import a11yStyles from "~/styles/accessibility.module.css";
 
 import SubsectionTablet from "../../../components/SubsectionTablet";
 import TabletBox from "../../../components/TabletBox";
@@ -18,7 +18,7 @@ export const DescriptionTablet: FC = () => {
         theme={characterTheme}
       >
         <section>
-          <h2 style={visuallyHidden}>Background</h2>
+          <h2 className={a11yStyles.screenreaderOnly}>Background</h2>
           <Description theme={characterTheme} />
         </section>
       </TabletBox>