Firefox not displaying CSS on webpages
I have seen this problem on multiple systems running recent versions of Firefox (26, 27, etc.) on Windows 7. All of a sudden, Firefox will not render the CSS formatting on most websites, basically leaving an unusable page. The only thing that seems to fix the problem is restarting the computer. There doesn't seem to be any rhyme or reason to when it happens. I've seen it happen after the system has only been up for a few minutes and also on systems that have been running for months.
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Can you attach a screenshot?
- http://en.wikipedia.org/wiki/Screenshot
- https://support.mozilla.org/kb/how-do-i-create-screenshot-my-problem
Use a compressed image type like PNG or JPG to save the screenshot.
See:
Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).
- Do NOT click the Reset button on the Safe Mode start window.
- https://support.mozilla.org/kb/Safe+Mode
- https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes
Make sure that you haven't enabled a High Contrast theme in the Windows/Mac Accessibility settings.
Make sure that you allow pages to choose their own colors.
- Tools > Options > Content : Fonts & Colors > Colors : [X] "Allow pages to choose their own colors, instead of my selections above"
Note that these settings affect background images.
See also:
I haven't seen the issue yet since I posted the question. I will submit a screenshot the next time it happens.