title: Different font size in Firefox vs. IE & Chrome
body: <p>my website in developing process looking in Mozilla Firefox with same font-size declaration, margin &amp; padding and different font-families always a few smaller than in Google Chrome or Internet Explorer.</p>
  
  <p>For example letter "O":</p>
  
  <pre><code>IE: 27 px height
  Chrome: 27 px height
  Firefox: 24 px height
  </code></pre>
  
  <p>All developer tools show font-size:38px;. I've also tried to fix the issue with em values. But it's the same issue.</p>
  
  <p>Any ideas how I can find out where the issue is?</p>
  
  <p><a href="https://i.stack.imgur.com/EpeAN.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/EpeAN.jpg" alt="Different font size Chrome"></a>
  <a href="https://i.stack.imgur.com/bavPB.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/bavPB.jpg" alt="Different font size Firefox"></a></p>