title: Iframes not working
body: <p>I'm trying to get Iframes to work. I'm running safari, so it is compatible, but when I test it, it comes up blank. 
  Code:</p>
  
  <p><code>&lt;iframe src="http://www.google.com" width="100%" height="300"&gt;</code></p>
  
  <p><code>&lt;p&gt;Your browser does not support iframes.&lt;/p&gt;</code></p>
  
  <p><code>&lt;/iframe&gt;</code></p>
  
  <p>I took the code directly from the w3schools website after using the "try it out" editor so I know it's supposed to work. When I changed the page from a page in their subdirectory to an external page, it shows up blank. </p>