title: Non-fixed height of graph (amCharts)
body: <p>I'm trying to use amCharts for creating a graph.
  Now my html contains following:</p>
  
  <pre><code>&lt;div id="chartdiv" style="width: 100%; height: 400px;"&gt;&lt;/div&gt;
  </code></pre>
  
  <p>It fills all screen by width, but there is hardcoded height. As a result it displays incorrectly on my phone. When I try this:</p>
  
  <pre><code>height: 50%;
  </code></pre>
  
  <p>It doesn't work (nothing shows). </p>
  
  <p>Is it possible to set height in percents?(I need a graph which will occupy 50% of the screen's height). Maybe it's possible to implement this through Bootstrap (how)?</p>