title: Calculate line-height with font in rem-value
body: <p>How can i calculate the most suitable line-height for font-size set with rem? </p>
  
  <p>For example: </p>
  
  <pre><code>html {
      font-size: 62.5%;
  }
  
  p {
      font-family: Arial, Helvetica, sans-serif;
      font-size: 14px;
      font-size: 1.4rem;
      line-height: 1.3; /* how do i calculate this value? */
  }
  </code></pre>
  
  <p>The reason i asked the question is that im a puzzled how to understand the relationship between font-size in body (for easy rem calculation), actual rem font-size and the "non-value" in line-height which as far as i understand in a STATIC layout represents font-size like:</p>
  
  <p><code>font-size: 20px;</code> and <code>line-height: 2.0;</code> - will add height of font-size as line-height</p>
  
  <p>In a fluid layout - when using rem in font-size - will the "non-value" line-height: 2.0; use height of font calculated in rem as line-height or still rely on the pixel-based value (which in the example is fallback for older browsers)?<br />
  I think i should have put this is my original question - i'll edit now </p>