title: Font sizes in UIWebView does NOT match iOS font size
body: <p>Here's a UILabel which says "About". Set at exactly 17.7 in iOS.</p>
  
  <p>Below it a UIWebView which also says "About".  Also set at exactly 17.7 using css.</p>
  
  <p><a href="https://i.stack.imgur.com/OCRGS.png" rel="noreferrer"><img src="https://i.stack.imgur.com/OCRGS.png" alt="enter image description here"></a></p>
  
  <p>They don't match.</p>
  
  <p>How to fix this correctly?</p>
  
  <p>It is <strong>bizarre that in Apple's own UIWebView, the size basis is different</strong>?</p>
  
  <p>Html to test...</p>
  
  <pre><code>&lt;html&gt;&lt;head&gt;
  &lt;style type='text/css'&gt;
  body {
  margin: 0px;
  font-family: 'SourceSansPro-Light';
  font-size: FONTPOINTSpt;
  }
  html { -webkit-text-size-adjust:none; }
  &lt;/style&gt;&lt;/head&gt;
  &lt;body leftmargin=0 topmargin=0&gt;
  About
  &lt;/body&gt;&lt;/html&gt;
  </code></pre>
  
  <p>Behavior is identical on device or simulator.</p>
  
  <p>(Note, from <a href="https://stackoverflow.com/a/11786118/294884">here</a> I learned the ratio is, perhaps 72.0/96.0.)</p>