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::-moz-range-progress

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-range-progress CSS pseudo-element is a Mozilla extension that represents the lower portion of the track (i.e., groove) in which the indicator slides in an <input> of type="range". This portion corresponds to values lower than the value currently selected by the thumb (i.e., virtual knob).

Note: Using ::-moz-range-progress with anything but an <input type="range"> doesn't match anything and has no effect.

Syntax

::-moz-range-progress

Example

HTML

<input type="range" min="0" max="100" step="5" value="50"/>

CSS

input[type=range]::-moz-range-progress {
  background-color: green;
  height: 1em;
}

Result

A progress bar using this style might look something like this:

Specifications

Not part of any specification. This is a proprietary pseudo-element specific to Gecko.

Browser compatibilityUpdate compatibility data on GitHub

	Desktop
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari
Basic support	No	No	Yes	No	No	No

	Mobile
	Android webview	Chrome for Android	Edge Mobile	Firefox for Android	Opera for Android	iOS Safari	Samsung Internet
Basic support	No	No	No	Yes	No	No	No