Example of the HTML <meter> tag used with pseudo-elements:

Source Code: (back to article)

<!DOCTYPE html>
<html>
  <head>
    <title>Title of the document</title>
    <style>
      meter {
        margin: 2em;
        width: 400px;
        height: 30px;
        position: relative;
      }
      meter::before {
        content: 'Used storage';
        position: absolute;
        top: -100%;
      }
      meter::after {
        content: 'Free storage';
        position: absolute;
        top: -100%;
        right: 0;
      }
      meter::-webkit-meter-bar {
        background: none;
        background-color: lightgray;
        box-shadow: 0 5px 5px -5px #333 inset;
      }
      meter::-webkit-meter-optimum-value {
        -webkit-transition: width .5s;
        box-shadow: 0 5px 5px -5px #999 inset;
        background-image: linear-gradient( 90deg, #8bcf69 5%, #e6d450 5%, #e6d450 15%, #f28f68 15%, #f28f68 55%, #cf82bf 55%, #cf82bf 95%, #719fd1 95%, #719fd1 100%);
        background-size: 100% 100%;
      }
      meter::-webkit-meter-optimum-value:hover {
        /* Reset each sub-category to 20% */
        background-image: linear-gradient( 90deg, #8bcf69 20%, #e6d450 20%, #e6d450 40%, #f28f68 40%, #f28f68 60%, #cf82bf 60%, #cf82bf 80%, #719fd1 80%, #719fd1 100%);
        transition: width .5s;
        width: 100% !important;
        /* !important required. to override the inline styles in WebKit. */
      }
    </style>
  </head>
  <body>
    <meter value="25" min="0" max="70"></meter>
  </body>
</html>