css pseudo element
`::-webkit-progress-inner-element` CSS pseudo-element
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-valuetake effect,appearanceneeds to be set tononeon the<progress>element.
Syntax
::-webkit-progress-inner-element {
/* ... */
}
Examples
These examples work only on Blink and WebKit.
Adding a black border around the progress bar
In this example, a 2px black border is added around the progress bar.
HTML
<progress value="10" max="50"></progress>
CSS
progress {
-webkit-appearance: none;
}
::-webkit-progress-inner-element {
border: 2px solid black;
}
Result
Interactive exampleOpen the canonical MDN source to run this embedded demo.
Result screenshot
If you’re not using a Blink or WebKit browser, the above code results in a progress bar looking like this:

Specifications
Not part of any standard.
Browser compatibility
Browser compatibilityCompatibility data is available on the canonical MDN page.
See also
-
The pseudo-elements used by WebKit/Blink to style other parts of a
<progress>element: