title: HTML full screen side without scrollbars
body: <p>I tried to create a full screen website without scrollbars and have problems defining the margins for that. Given is a minimum example:</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
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  <pre class="snippet-code-css lang-css prettyprint-override"><code>html {
      margin: 0;
      padding: 0;
      height: 100%;
      background: yellow;
  }
  
  body {
      margin: 0;
      padding: 0;
      height: 100%;
      max-height: 100%;
      background: green;
  }
  
  h1 {
      background: gray;
  }</code></pre>
  <pre class="snippet-code-html lang-html prettyprint-override"><code>    &lt;body&gt;
          &lt;h1&gt;Heading 1&lt;/h1&gt;
      &lt;/body&gt;</code></pre>
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  </p>
  
  <p>Why do I get the yellow background of the <code>html</code> element in the top of the side? Even more surprising to me is that the yellow part disappears, if I add text before the <code>h1</code> element.</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-css lang-css prettyprint-override"><code>html {
      margin: 0;
      padding: 0;
      height: 100%;
      background: yellow;
  }
  
  body {
      margin: 0;
      padding: 0;
      height: 100%;
      max-height: 100%;
      background: green;
  }
  
  h1 {
      background: gray;
  }</code></pre>
  <pre class="snippet-code-html lang-html prettyprint-override"><code>    &lt;body&gt;
          Add some text and the yellow part disappears.
          &lt;h1&gt;Heading 1&lt;/h1&gt;
      &lt;/body&gt;</code></pre>
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  </p>
  
  <p>Is there any idea to avoid the yellow part in the top without adding text before the heading element?</p>