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
The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
:-moz-window-inactive | Chrome No support No | Edge No support No | Firefox Full support 4 | IE No support No | Opera No support No | Safari No support No | WebView Android No support No | Chrome Android No support No | Firefox Android No support No | Opera Android No support No | Safari iOS No support No | Samsung 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
- Mozilla CSS extensions
- Related CSS selectors:
- The
activeElement
property on documents and shadow DOM roots