Make custom styles only for Mozilla Firefox

Some HTML elements & styles are look like broken in some Firefox versions. If you like to optimize your design for Mozilla Firefox, we can use a simple filter for Firefox only.

@-moz-document url-prefix() { 
 .inner-container {
 padding: 4px 4px 2px 0;
 }
}

Any CSS rule that starts with @-moz- is a Gecko-engine-specific rule, not a standard rule. That is, it is a Mozilla-specific extension.

Another option is to use the domain() filter. For example @-moz-document domain(http://google.com) {...} will apply the enclosed CSS rules only on the http://google.com domain in Firefox.

The url-prefix rule applies the contained style rules to any page whose URL starts with it in Gecko (Mozilla Firefox). When used with no URL argument like @-moz-document url-prefix(), it applies to ALL pages.

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