title: Line height default value if font size is 100%
body: <p>I must override the body style of my page:</p>
  
  <pre><code>body{
      font-size:14px;
      line-height:20px;
  }
  </code></pre>
  
  <p>override:</p>
  
  <pre><code>body{
      font-size:100%;
      line-height:?????;
  }
  </code></pre>
  
  <p>What is the defualt value of <code>line-height</code> property if I specified <code>font-size:100%</code> ?</p>
  
  <p>Is there a strict relation between this properties ?</p>