::-webkit-progress-bar

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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 ::-webkit-progress-bar CSS pseudo-element represents the entire bar of a <progress> element. Normally it's only visible as the unfilled portion of the bar, since by default it's rendered below the ::-webkit-progress-value pseudo-element. It is a child of the ::-webkit-progress-inner-element pseudo-element and the parent of the ::-webkit-progress-value pseudo-element.

Note: For ::-webkit-progress-value to take effect, appearance needs to be set to none on the <progress> element.

Specifications

Not part of any specification. This is a proprietary pseudo-element specific to WebKit/Blink.

Example

CSS content

progress {
  -webkit-appearance: none;
}

::-webkit-progress-bar {
  background-color: orange;
}

HTML content

<progress value="10" max="50">

Output

A progress bar using the style above would look like this:

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
::-webkit-progress-bar
Non-standard
Chrome Full support 25Edge No support NoFirefox No support NoIE No support NoOpera Full support 15Safari Full support 6.1WebView Android Full support ≤37Chrome Android Full support 25Firefox Android No support NoOpera Android Full support 14Safari iOS Full support 7Samsung Internet Android Full support 1.5

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