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Firefox Browser display

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mobile version showing up on laptop, but I'm not at 300% like the other person with that problem posted in your Community questions in December. It only happens on LinkedIn and Facebook? My chrome browser displays normal, I am on Windows 10 and fully up to date.

mobile version showing up on laptop, but I'm not at 300% like the other person with that problem posted in your Community questions in December. It only happens on LinkedIn and Facebook? My chrome browser displays normal, I am on Windows 10 and fully up to date.

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I saw your other question first, so perhaps we should continue there: https://support.mozilla.org/questions/1326164