.control-box_xc {
    width: 1300px;
    height: 330px;
    background-size: 1155px;
    background-position: 60px 165px;
    margin-left: auto;
    margin-right: auto;
	margin-top:10px;
}
.control-box_xc ul {
  list-style: none;
  position: relative;
}
.control-box_xc ul li {
  position: absolute;
  top:100px;
  cursor: pointer;
}
.prev {
  left: 0;
}
.next {
  right: 0;
}
.bigbox_xc {
  overflow: hidden;
  width: 1192px;
  height: 335px;
  margin: auto 50px auto;
}
#switcher {
  height: 285px;
  left: 0px;
}
.content_1.content_2 {
  width: 100%;
  float: left;
}
.box_xc {
  width: 170px;
  height: 270px;
  float: left;
  margin: 0px;
  border: 1px #f8f8f8 solid;
}