Fix problems with Facebook games, chat and more

If you have increased the minimum font size then try the default setting "none" as a high value can cause issues like you described.

• Tools > Options > Content : Fonts & Colors > Advanced > Minimum Font Size (none)
• Tools > Options > Content : Fonts & Colors > Advanced > [X] "Allow pages to choose their own fonts, instead of my selections above"

You can use an extension to set a default font size and page zoom on web pages:

• Default FullZoom Level: https://addons.mozilla.org/firefox/addon/default-fullzoom-level/
• NoSquint: https://addons.mozilla.org/firefox/addon/nosquint/

Websites look wrong

• https://support.mozilla.com/en-US/kb/Websites%20look%20wrong

Check and tell if its working.

That seems to be a problem with the DIV #leftColContainer that takes the full width of that container if the font size succeeds a specific size.

This CSS style rule fixes it for me.

@-moz-document domain(www.facebook.com) {
 #leftColContainer { width: 181px !important; }
}

• Stylish: https://addons.mozilla.org/firefox/addon/stylish/

I am also having problem with the captions on pictures as well as other issues which forces me to use I.E. frequently.