title: z-index and iframe issue - dropdown menu
body: <p>Hey. Having a rather puzzling issue with my dropdown menus and iframes.</p>
  
  <p>I have applied a z-index of 1000 to the dropdown menus, however the iframe containing the youtube video still appears above the menu. See for yourself below (check the 'shortcodes' menu):</p>
  
  <p><a href="http://www.matthewruddy.com/demo/?page_id=765" rel="noreferrer">http://www.matthewruddy.com/demo/?page_id=765</a></p>
  
  <p>I cannot figure out why this is. Can anyone help me out? Here is the CSS if it helps:</p>
  
  <pre><code>#jquery-dropdown {
  position: absolute;
  bottom: 0;
  right: 10px;
  }
  
  #jquery-dropdown ul {
  margin: 0;
  padding: 0;
  list-style: none;
  }
  
  #jquery-dropdown ul li {
  margin: 0;
  padding: 15px 10px 15px 10px;
  position: relative;
  float: left;
  }
  
  #jquery-dropdown ul li a {
  display: block;
  text-decoration: none;
  font-weight: bold;
  font-size: 13px;
  color: #707070;
  outline: none;
  }
  
  #jquery-dropdown ul li ul {
  position: absolute;
  left: -10px;
  top: 46px;
  display: none;
  background: #f4f4f4;
  border: 1px solid #e1e1e1;
  border-top: none;
  z-index: 1000;
  padding: 5px 0;
  -moz-box-shadow: 1px 2px 3px #a4a4a4;
  -webkit-box-shadow: 1px 2px 3px #a4a4a4;
  box-shadow: 1px 2px 3px #a4a4a4;
  }
  
  #jquery-dropdown ul li ul li {
  margin: 0;
  padding: 0;
  float: none;
  position: relative;
  z-index: 1000;
  }
  
  #jquery-dropdown ul li ul li a {
  width: 180px;
  padding: 10px;
  z-index: 1000;
  }
  
  #jquery-dropdown ul li ul li a:hover {
  background: #e0e0e0;
  }
  </code></pre>