.folder {cursor:pointer;}
  .folder img {padding-top:2px;}
  .indent-block {padding-left:1em;}
  .indent-link {border-left:1px solid lightgray; margin:0.3em 0 0.5em 0; padding-left:0.5em;}
  .opmaak {padding: 0.2em 0 0.3em 2.2em;}