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-progress-bar
CSS pseudo-element is a Mozilla extension that represents the progress bar inside a <progress>
element. (The bar represents the amount of progress that has been made.)
Syntax
::-moz-progress-bar
Examples
HTML
<progress value="30" max="100">30%</progress> <progress max="100">Indeterminate</progress>
CSS
::-moz-progress-bar { background-color: red; } /* Force indeterminate bars to have zero width */ :indeterminate::-moz-progress-bar { width: 0; }
Result
The first bar from above should look like this: