:-moz-window-inactive

Non-standard: This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.

The :-moz-window-inactive CSS pseudo-class is a Mozilla extension that matches any element while it's in an inactive window.

:-moz-window-inactive works in content HTML documents, too.

Note: Prior to the addition of this pseudo-class, giving different styles to background windows was achieved by setting an attribute (active="true") on the top-level XUL chrome window. This attribute is no longer used.

Syntax

css
:-moz-window-inactive {
  /* ... */
}

Examples

This example alters the appearance of a box's background depending on whether its window is active or not.

HTML

html
<div id="my-box">
  <p>This is a box!</p>
</div>

CSS

css
#my-box {
  background: linear-gradient(to bottom, yellow, cyan);
  width: 200px;
  height: 200px;
}

#my-box:-moz-window-inactive {
  background: cyan;
}

Result

The result of this code is shown below. You can view this as a separate page as well.

Specifications

Not part of any standard.

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
:-moz-window-inactive
Non-standard

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support
No support
No support
Non-standard. Check cross-browser support before using.

See also