title: Material UI Drawer won't move under Appbar
body: <p>I have an Appbar and a drawer right beneath it. Under both components I have 3 <code>divs</code> with bootstrap and in each <code>div</code> I have a group of buttons.</p>
  
  <p>The problem is that the Drawer covers the Appbar and I just can't seem to move it.</p>
  
  <p>Here's my code:</p>
  
  <pre><code>&lt;div className="App"&gt;
  
          &lt;AppBar position="static"&gt;
            &lt;Toolbar&gt;
                &lt;IconButton color="inherit" aria-label="Menu"&gt;
                  &lt;MenuIcon /&gt;
                &lt;/IconButton&gt;
                &lt;Typography variant="title" color="inherit" aria-label="Menu"&gt;
                  title
                &lt;/Typography&gt;
            &lt;/Toolbar&gt;
          &lt;/AppBar&gt;
  
          &lt;Drawer
            variant="permanent"
            style={{width: '100%', zIndex: '1400', position:'absolute'}}
          &gt;
            &lt;Button&gt;1&lt;/Button&gt;
            &lt;Button&gt;2&lt;/Button&gt;
            &lt;Divider /&gt;
            &lt;Button&gt;1&lt;/Button&gt;
            &lt;Button&gt;2&lt;/Button&gt;
          &lt;/Drawer&gt;
          &lt;br /&gt;
          &lt;div className="container-full"&gt;
            &lt;div className="row"&gt;
              &lt;div class="col-sm-6"&gt;  
                &lt;GridList cellHeight={50} className={styles.gridList} cols={5}&gt;
  
                  &lt;Button style={{width: '150px', border: '1px solid'}} variant="raised" color="primary"&gt;
                    &lt;div 
                    style={{fontSize:'12px', display: 'flex', justifyContent: 'center', textAlign:'center'}}&gt;
                      Mohnweckerl Wiener Gouda
                    &lt;/div&gt;
                  &lt;/Button&gt;
  </code></pre>
  
  <p>After the first bootstrap column, another <code>"col-sm-4"</code> follows and then a <code>"col-sm-2"</code>. The buttons are in a <code>GridList</code></p>
  
  <p>Here's a visual </p>
  
  <p><a href="https://i.stack.imgur.com/rihoZ.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/rihoZ.jpg" alt="enter image description here"></a></p>
  
  <p>The Drawer should start where the arrows meet.</p>
  
  <p>Any ideas?</p>