a.box-delete {
  display: block;
  width: 46px;
  height: 13px;
  text-indent: -9999px;
  background: transparent url(../images/box-delete-button.png) no-repeat center top;
}

a.box-edit {
  display: block;
  width: 46px;
  height: 13px;
  text-indent: -9999px;
  background: transparent url(../images/box-edit-button.png) no-repeat center top;
}