.language_btn{
  position: absolute;
  top: 10px;
  right: 10px;
  width: 30px;
  height: 30px;
  cursor:pointer;
}
.language_cn{
  background: url("../images/icon/cn.png");
  background-size: 30px 30px;
}
.language_cn:hover{
  background: url("../images/icon/cn@selected.png");
  background-size: 30px 30px;
}
.language_en{
  background: url("../images/icon/en.png");
  background-size: 30px 30px;
}
.language_en:hover{
  background: url("../images/icon/en@selected.png");
  background-size: 30px 30px;
}