dl.feature {
   margin: 15px 0;
   padding: 15px;
   border-top: 1px dotted #ccc;
   border-bottom: 1px dotted #ccc;
   }
  dl.feature:after {
      content: "."; 
      display: block; 
      height: 0; 
      clear: both; 
      visibility: hidden;
   }