W3Schools Tryit 编辑器 - W3Schools 中文教程

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<title>W3.CSS</title>
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<div class="w3-container">
  <h2>Progress Bar Size</h2>
  <p>Use a w3-<em>size</em> class (w3-small, w3-large) to change the size of the progress bar:</p>

<p>w3-small:</p>
  <div class="w3-light-grey w3-small">
    <div class="w3-container w3-green" style="width:50%">50%</div>
  </div>

<p>Default:</p>
  <div class="w3-light-grey">
    <div class="w3-container w3-green" style="width:50%">50%</div>
  </div>

<p>w3-large:</p>
  <div class="w3-light-grey w3-large">
    <div class="w3-container w3-green" style="width:50%">50%</div>
  </div>

<p>w3-xlarge:</p>
  <div class="w3-light-grey w3-xlarge">
    <div class="w3-container w3-green" style="width:50%">50%</div>
  </div>
  
  <p>w3-xxlarge:</p>
  <div class="w3-light-grey w3-xxlarge">
    <div class="w3-container w3-green" style="width:50%">50%</div>
  </div>
</div>

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