Reddit CSS to add a collapse button to the bottom of comments

bottom_collapse_button.css

.entry { position: relative; }
.entry > p > a.expand:hover:after { background: #369; }
.entry > p > a.expand:after {
  content: '[–]';
  position: absolute;
  bottom: 12px;
  right: 10px;
  font-family: verdana, arial, helvetica, sans-serif;
  font-size: 10px;
  font-variant: normal;
  font-style: normal;
  line-height: normal;
}