title: sticky sidebar doesnt work react
body: <p>I am trying to implement a sticky sidebar on my react application but it is not working.
  I tried implementing <code>position:sticky</code> but it didnt work at all.Here is my code</p>
  
  <p>On my sidebar.js</p>
  
  <pre><code>&lt;Container className="content"&gt;
    &lt;Row&gt;     
      &lt;Col xs="3"&gt;
        &lt;div className="sidebar" /&gt;
      &lt;/Col&gt;
      &lt;Col xs="6"&gt;
        &lt;div className="postcontent" /&gt;
      &lt;/Col&gt;
      &lt;Col xs="3"&gt;
        &lt;div className="sidebar" /&gt;
      &lt;/Col&gt;
    &lt;/Row&gt;
  &lt;/Container&gt;
  </code></pre>
  
  <p>On my app.css</p>
  
  <pre><code>.sidebar {
    width: 100%;
    height: 900px;
    padding: 10px;
    position: sticky;
    top: 0px;
  }
  </code></pre>