<!DOCTYPE html>
<html>
  <style>
    div.meter-element {
      /**
       * The purpose of this test is to not show the native style.
       * -moz-appearance: meterbar;
       */
      display: inline-block;
      height: 1em;
      width: 5em;
      vertical-align: -0.2em;

      background: linear-gradient(#e6e6e6, #e6e6e6, #eeeeee 20%, #cccccc 45%, #cccccc 55%);
    }

    div.meter-bar {
      /**
       * The purpose of this test is to not show the native style.
       * -moz-appearance: meterchunk;
       */

      height: 100%;
      width: 100%;

      background: linear-gradient(#ad7, #ad7, #cea 20%, #7a3 45%, #7a3 55%);
    }

    div.meter-element { padding: 5px; }
    body > div:nth-child(1)  { -moz-appearance: none; }
    body > div:nth-child(2) > .meter-bar { -moz-appearance: none; }
    body > div:nth-child(3)  { background: red; }
    body > div:nth-child(4) > .meter-bar { background: red; }
    body > div:nth-child(5)  { border: 2px solid red; }
    body > div:nth-child(6) > .meter-bar { border: 5px solid red; width: -moz-calc(100% - 10px); }
  </style>
  <body>
    <div class="meter-element">
      <div class="meter-bar"></div>
    </div>
    <div class="meter-element">
      <div class="meter-bar"></div>
    </div>
    <div class="meter-element">
      <div class="meter-bar"></div>
    </div>
    <div class="meter-element">
      <div class="meter-bar"></div>
    </div>
    <div class="meter-element">
      <div class="meter-bar"></div>
    </div>
    <div class="meter-element">
      <div class="meter-bar"></div>
    </div>
  </body>
</html>