anchor.diff:    float: left;
   }
   .guide article .inner {
  -  padding: 2em 2.5em 1em 2.5em;
  +  padding: 0.5em 2.5em 1em 2.5em;
   }
   #wrapper.guide aside {
     float: left;
  
positive.code:   background-image: url(<%= asset_path "icon-guide-l.png" %>);
  }
  #wrapper.guide hgroup h1 span {
    color: #157eb8;
  }
  #wrapper.guide header {
    position: relative;
  }
  #wrapper.guide header hgroup {
  /*  min-height: 5.75em;*/
    margin-left: 0;
  }
  
negative.code: aside .chapters-navigation {
    display: block;
    float: right;
    margin-top: 0.5em;
    width: 95%;
  }
  aside .chapters-navigation ol {
  