#mentioned-user-list{
  position: absolute;
  border: 1px solid #CCC;
  margin: 0;
  padding: 0;
  width: 200px;
  height: 200px;
  overflow-y: scroll;
}
#mentioned-user-list li{
  border-bottom: 1px solid #CCC;
  padding: 10px;
  list-style-type: none;
}
#mentioned-user-list li:hover{
  background: #CCC;
}
#mentioned-user-list li.active{
  background-color: #333;
  color: #FFF;
}
#mentioned-user-list li img{
  width: 24px;
  height: 24px;
  margin-right: 10px;
}
#mentioned-user-list li span{}