hello

Take a look at this question https://support.mozilla.org/en-US/questions/1553419

I installed, Linux, in dual-boot with Windows7.

My feedback. At the left Linux Firefox - Firefox Windows7 at the right.

Hello

For information purposes by way of illustration.

Screenshot 1 at the right window. With the help of responsive design mode. https://firefox-source-docs.mozilla.org/devtools-user/responsive_design_mode

Screenshot 2 if you wish to try. User Agent Switcher https://addons.mozilla.org/firefox/addon/uaswitcher

Hello

This clarification.

On the Linux Firefox screenshot 12/30/25, 7:31 AM. You don't see the video of the site, that's normal.

Allow or block media autoplay in Firefox. https://support.mozilla.org/en-US/kb/block-autoplay

Block Audio and Video, that's my setting. Illustration. https://www.youtube.com/watch?v=yQx1w7ytcFo