new querySelector (new BBB version)

bbb-volume-slider.user.js

@@ -16,7 +16,7 @@ async function sleep(ms) {
 }
 
 function getTopRightContainer() {
-    return document.querySelector("div[class^=top] div[class^=right]");
+    return document.querySelector(".sc-jLVpRp.eRnBWT");
 }
 
 function remoteMedia() {