title: Black line appearing at bottom of UIWebView. How to remove?
body: <p>I am rendering some html in a webview that is embedded in a table cell.  For some reason there is a black line at the bottom of the webview.  I tried setting the background color of the webview and its scrollview to white but this did not change anything.  Has anyone seen this before?<img src="https://i.stack.imgur.com/KlUCC.png" alt="UIWebView with black line at bottom"></p>
  
  <p>Here is the HTML that is being rendered:</p>
  
  <p></p>
  
  <pre><code>&lt;html&gt;
  &lt;head&gt;
  
      &lt;style type="text/css"&gt;
  a {text-decoration:none;background-color:white;}
      &lt;/style&gt;
  
      &lt;title&gt;&lt;/title&gt;
  &lt;/head&gt;
  
  &lt;body style="margin:0;padding:0;background-color:white;"&gt;
      &lt;a href="http://body/" style=
      "font-family:HelveticaNeue-Light;font-size:20.000000;color:black;-webkit-tap-highlight-color:rgba(0,0,0,0);"&gt;
      Portland Blazers vs Golden State Warriors | FULL Highlights | January 26 ,
      2014 | NBA 2013-14 Season&lt;/a&gt;&lt;span style=
      "font-family:HelveticaNeue;font-size:12.000000;color:rgb(102,102,102);white-space:nowrap;"&gt;&lt;a href="https://www.youtube.com/watch?v=2TfldZ4w57E&amp;amp;feature=youtube_gdata_player"
      style=
      "font-family:HelveticaNeue;font-size:12;color:rgb(102,102,102);-webkit-tap-highlight-color:rgba(0,0,0,0);"&gt;&lt;img height="12"
      src="file:link@2x.png" width="20"&gt;www.youtube.com&lt;/a&gt;&lt;/span&gt;
  &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>This is on iOS7.</p>
  
  <p><strong>UPDATE:</strong> I'm still not sure what is causing the black line to appear but I managed to get rid of it by changing how I setup my layout constraints.  Before I was setting constraints for the spacing around the views and letting the layout system figure out the size that the view should be.  I changed it to explicitly set a height constraint of the webview when the webview finishes loading its content.  This seems to have fixed the issue but I still do not understand where the black line was coming from.</p>