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::-webkit-progress-inner-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-inner-element CSS pseudo-element represents the outermost container of the <progress> element. It is the parent of the ::-webkit-progress-bar pseudo-element.

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

Example

HTML

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

CSS

progress {
  -webkit-appearance: none;
}

::-webkit-progress-inner-element {
  border: 2px solid black;
}

Result

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

Specifications

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

Browser compatibility

Feature	Firefox (Gecko)	Chrome	Internet Explorer	Opera	Safari
Basic support	No support	(Yes)	No support	(Yes)	(Yes)

Feature	Firefox Mobile (Gecko)	Android	IE Phone	Opera Mobile	Safari Mobile
Basic support	No support	(Yes)	No support	(Yes)	(Yes)