`::-webkit-progress-bar` CSS pseudo-element

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.

Syntax

::-webkit-progress-bar {
  /* ... */
}

Examples

CSS

progress {
  -webkit-appearance: none;
}

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

HTML

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

Result

Result screenshot

The code above results in a progress bar that looks like this when using a WebKit or Blink browser:

The progress bar is a horizontal bar about the height of a letter. The left 20% is green. The right 80% is orange.

Specifications

Not part of any standard.

Browser compatibility

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Chrome Android	Firefox for Android	Opera Android	Safari on iOS	Samsung Internet	WebView Android	WebView on iOS
`-webkit-progress-bar`	25	79	No	15	7	25	No	14	7	1.5	4.4	7