anchor.diff:  }
   
   .contact {
  -  background-color:#e5e5e5;
  +  background-color:#d5e8f3;
     box-sizing: border-box;
     margin: 0.75em -1em;
     padding: 0.25em 1em;
  
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;
  }
  