title: Why my UIWebview cannot 'full' screen?
body: <p>I have a <code>UIWebview</code> built on XIB with following settings:</p>
  
  <pre><code>[self.webView setScalesPageToFit:YES];
  self.webView.opaque = NO;
  </code></pre>
  
  <p>However, there are some white spaces on bottom, while if I try on my Mac's Chrome and iOS Simulator's Safari, it doesn't have that white space. What setting that I lack in my <code>UIWebview</code>?</p>