anchor.diff:    }
     
     .close {
  -    position:static;
  -    padding:0.2em 0 0.2em 0.5em;
  +    padding:0.2em px($top-level-padding) 0.2em 0.5em;
       text-align:right;
       
       a {
  +      background-position:0.6875em 0.6875em;
         display:inline-block;
         text-indent:99999px;
  +      overflow:hidden;
       }
     }
     
  
positive.code:     float:none;
      margin:0;
      width:auto;
      min-height:0;
      
      padding-bottom:3em;
  
negative.code:   margin: 0;
    background: $top-section-grey;
    position: relative;
    zoom:1;
    
    dl {
      @include contain-float;
  