Hello,
I try to added a CSS rule on my common.css on frwiki:
html[style*="margin-left: 268px;"] { margin-left: 80px !important; }
This rule is used to optimize the use of an "WAVE Accessibility Extension", it is a add-on for Firefox designed to check the accessibility of a webpage.
Minified CSS such as visible with the web development tools on Firefox:
html[style*="margin-left:268px;"] { margin-left:80px !important }
Result : margin-left: 268px; is replaced by margin-left:268px; = breaking rule !
The minification breaks the rule at the attribute selector, removing the space between margin-left: and 268px;, which prevents the attribute selector from working.
I solved the problem by just using 268px; in attribute selector, which is enough in my case. But the problem may arise in other circumstances.
The minification should not impact the part inside an attribute selector of a rule.
(sorry for my bad english)