#main article {
  width: 60%; }

[data-toggle="collapse"]:after {
  display: inline-block;
  display: inline-block;
  font: normal normal normal 14px/1 FontAwesome;
  font-size: inherit;
  text-rendering: auto;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  content: "\f054";
  transform: rotate(90deg);
  transition: all linear 0.25s;
  float: right; }

[data-toggle="collapse"].collapsed:after {
  transform: rotate(0deg); }