anchor.diff:    <li><a href="#">This is another</a></li>
     <li><a href="#">Yet another</a></li>
   </ul>
  +<ul id="drop1" data-dropdown-content class="f-dropdown">
  +  <li><a href="#">This is a link</a></li>
  +  <li><a href="#">This is another</a></li>
  +  <li><a href="#">Yet another</a></li>
  +</ul>
   <ul id="drop2" data-dropdown-content class="f-dropdown">
     <li><a href="#">This is a link</a></li>
     <li><a href="#">This is another</a></li>
  
positive.code: }
  ', :css %>
  
      <a href="" class="dropdown button">Default Dropdown Button</a>
  
      <p>There are also <strong>three options</strong> you can customize on the fly when writing this mixin. These control things like: background color, pip color, and base styles. Setting any of these options to <strong>false</strong> will not include the styles.</p>
  
  
negative.code:   <li><a href="#">This is another</a></li>
    <li><a href="#">Yet another</a></li>
  </ul>
  <ul id="drop6" data-dropdown-content class="f-dropdown">
    <li><a href="#">This is a link</a></li>
    <li><a href="#">This is another</a></li>
    <li><a href="#">Yet another</a></li>
  </ul>
  <ul id="drop7" data-dropdown-content class="f-dropdown">
    <li><a href="#">This is a link</a></li>
    <li><a href="#">This is another</a></li>
    <li><a href="#">Yet another</a></li>
  </ul>
  