:-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

:-moz-window-inactive

Examples

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

HTML

<div id="mybox">
  <p>This is a box!</p>
</div>

CSS

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

#mybox:-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

DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
:-moz-window-inactive
Non-standard
Chrome No support NoEdge No support NoFirefox Full support 4IE No support NoOpera No support NoSafari No support NoWebView Android No support NoChrome Android No support NoFirefox Android No support NoOpera Android No support NoSafari iOS No support NoSamsung Internet Android No support No

Legend

Full support
Full support
No support
No support
Non-standard. Expect poor cross-browser support.
Non-standard. Expect poor cross-browser support.

See also