title: how to set the child two div 50%, 50% with the parent div
body: <p>I have following kind of pattern. How to apply a css changes for first and second childDiv  class  to 50% to the parent div</p>
  
  <p>How do I set 50%, 50% to the child div?</p>
  
  <pre><code>&lt;div class="parentDiv"&gt;
      &lt;div class="childDiv"&gt;   // 50% width
     &lt;/div&gt;
     &lt;div class="childDiv"&gt;   // 50% width
     &lt;/div&gt;
  &lt;/div&gt;
  </code></pre>