Fixes the width when viewing Youtube desktop mode on small screen device, useful when your using add-ons that is only available on desktop mode, ex: Comet - Reddit Comments on YouTube & Webpages, *use https://addons.mozilla.org/en-US/firefox/addon/uaswitcher/ some add-ons like comet works only when url don't contain "app=desktop"
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Thank you soooo much
Please can you please make a script like this for web.facebook.com....even removing the right sidebar completely would be fine as well