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<h2>The w3-panel Class</h2>
<p>The w3-panel class adds 16px of padding on the left and right, and 16px of margin above and below.</p>
<p>This makes the element behave like a paragraph and a container:</p>

<div class="w3-container w3-green">
  <h3>w3-container</h3>
  <p>Tokyo is the center of the Greater Tokyo Area,
  and the most populous metropolitan area in the world.</p>
</div>

<div class="w3-container w3-red">
  <h3>w3-container</h3>
  <p>Tokyo is the center of the Greater Tokyo Area,
  and the most populous metropolitan area in the world.</p>
</div>

<div class="w3-panel w3-green">
  <h3>w3-panel</h3>
  <p>Tokyo is the center of the Greater Tokyo Area,
  and the most populous metropolitan area in the world.</p>
</div>

<div class="w3-panel w3-red">
  <h3>w3-panel</h3>
  <p>Tokyo is the center of the Greater Tokyo Area,
  and the most populous metropolitan area in the world.</p>
</div>

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