progressive.css

@media (max-width: 990px){
  .doc-nav.affix {
     position: static;
     width: auto;
     top: 0;
    }
}

@media (min-width: 990px){
  .doc-nav.affix {
     top: 60px;
  }
  .doc-nav.affix-bottom {
     position: absolute;
  }
}

.doc-nav > li {
    background: none repeat scroll 0 0 #F6F8FA;
    margin-bottom: 1px;
    width: 200px;
}

.doc-nav > li.active > a {
    font-weight: bold;
}

.doc-nav .docs-progress-bar {
    background: none repeat scroll 0 0 #DEE4EC;
    bottom: 0;
    left: 0;
    position: absolute;
    top: 0;
}