title: CSS property of nested class `.divy` to cover 100% of `body`?
body: <p>html (jade)</p>
  
  <pre><code>body
   .divx
    .divy
  </code></pre>
  
  <p>Given css:</p>
  
  <pre><code>.divx {
    width: 200px;
    height: 200px;
  }
  </code></pre>
  
  <p>What css property of class <code>.divy</code> will make it cover 100% width and height of <code>body</code>?</p>
  
  <p>If i make </p>
  
  <pre><code>.divy {
    width: 100%;
    height: 100%;
  }
  </code></pre>
  
  <p>The above makes <code>.divy</code> cover 100% of <code>.divx</code> not <code>body</code></p>