title: IE11 ignores background color in CSS
body: <p>See this code:</p>
  
  <pre><code>&lt;div class="wrapper"&gt;
    &lt;div id="menubar"&gt;
      jsdhfsdjkfhj
    &lt;/div&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>And this CSS:</p>
  
  <pre><code>.wrapper{
    display:          flex;
    flex:             1;
  }
  
  #menubar{
    min-height:           100%;
    flex:                 0 0 170px;
    background-color:     #404040;
    color:                white;
  }
  </code></pre>
  
  <p>When I view the page in Chrome or Firefox, the background color of this DIV is #404040, but when I view it in IE, it is white!</p>
  
  <p>Please help me solve this!</p>