.list-sorter i {
  width: 15px;
  height: 20px;
  display: block;
  float: right;
  background-position: center right;
  background-repeat: no-repeat;
  padding: 0px 10%;
}
.list-sorter .asc {
  background-image: url('../../../images/sort_asc.png');
}
.list-sorter .desc {
  background-image: url('../../../images/sort_desc.png');
}
.list-sorter .none {
  background-image: url('../../../images/sort_both.png');
}