indeterminate-style-width.html

Enable keyboard shortcuts

<!DOCTYPE html>

<html>

  <link rel='stylesheet' type='text/css' href='style.css'>

  <style>

    body > progress:nth-child(1)::-moz-progress-bar { width: 20px; }

    body > progress:nth-child(2)::-moz-progress-bar { width: 0px; }

    body > progress:nth-child(3)::-moz-progress-bar { width: 50%; }

    body > progress:nth-child(4)::-moz-progress-bar { width: 1em; }

    /* last one is for the default value: width=100%. */

  </style>

  <body>

    <!-- Those will be used to change padding/margin on ::-moz-progress-bar -->

    <progress></progress>

    <progress></progress>

    <progress></progress>

    <progress></progress>

    <progress></progress>

  </body>

</html>