anchor.diff:  }
   
   .highlight-answer {
  -  background-color:#E5E5E5;
  +  background-color:#cce0d6;
     color:#000;
     text-align:center;
     padding:0.1em 2em 0.2em 2em;
  
positive.code: }
  
  article .intro {
    background-color: #E5E5E5;
    margin: 0 -1em 1.5em -1em;
    padding: 1em 1em 1em 1em;
  }
  
negative.code: 
  article .help-notice,
  article .info-notice {
    background-color:#d5e8f3;
    margin: 1em -1em 1.5em -1em;
    padding: 0.5em 1em 0.5em 1em;
  }
  