Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

weird default display/css for every website

more options

Since yesterday, every webpage I load reverts to weird default css/layout

Attached: examples of what twitter, youtube, and google search look like (blacked out identifying info)

I can't remember doing anything different that would have caused this, did not download anything the day it happened

I've disabled all themes & all extensions, same results I've tried different themes, same results I've downloaded and installed new version of firefox, same results I've cleared all cache, history, and cookies, same results I've turned firefox on and off again, same results I've turned my computer on and off again, same results Help!

Using: Firefox version: 91.0 Mac version: Big Sur 11.4

Any suggestions about how to resolve? thank you!

Since yesterday, every webpage I load reverts to weird default css/layout Attached: examples of what twitter, youtube, and google search look like (blacked out identifying info) I can't remember doing anything different that would have caused this, did not download anything the day it happened I've disabled all themes & all extensions, same results I've tried different themes, same results I've downloaded and installed new version of firefox, same results I've cleared all cache, history, and cookies, same results I've turned firefox on and off again, same results I've turned my computer on and off again, same results Help! Using: Firefox version: 91.0 Mac version: Big Sur 11.4 Any suggestions about how to resolve? thank you!
Attached screenshots

Chosen solution

Recent release notes say that Firefox automatically enables High Contrast Mode when "Increase Contrast" is checked on MacOS. It can be turned off in FF settings under General -> the Colors... button -> Override the colors specified by the page with your selections above -> Never.

Read this answer in context 👍 1

All Replies (4)

more options

Hey there!

Here's a something I think you might find useful, on how to fix websites that look wrong

Hope I helped!

Kind regards,

Bithiah

more options

thanks for your response, should have added to list:

I've already tried everything suggested by "how to fix websites that look wrong"

more options

Chosen Solution

Recent release notes say that Firefox automatically enables High Contrast Mode when "Increase Contrast" is checked on MacOS. It can be turned off in FF settings under General -> the Colors... button -> Override the colors specified by the page with your selections above -> Never.

more options

Holy moly, that did it!! Turned off the increase contrast on my mac and everything went back to normal. Thank you!