.search_btn {
  min-width: 50px;
  border-radius: 2px;
  padding: 0px 5px;
  margin-right: 15px;
  font-weight: 400;
  text-align: center;
}
.search_btn:hover {
  background-position: left -85px;
}
.search_btn span {
  /* padding-right: 15px; */
  height: 28px;
  line-height: 28px;
  display: inline-block; /*background:url(top/images/search_btn.png) no-repeat right -41px;*/
}
.search_btn:hover span {
  background-position: right -125px; /*color:rgba(0, 255, 33, 0.57)*/
}