.control-box ul {
  list-style: none;
  position: relative;
}
.control-box ul li {
  position: absolute;
  top: 50px;
  cursor: pointer;
}
.prev {
  left: 0;
}
.next {
  right: 0;
}
.bigbox {
  overflow: hidden;
  width: 1032px;
  height: 190px;
  margin: auto 55px auto;
}
@media screen and (max-width:750px) {
  .control-box{
    width:100%;
    overflow: hidden;
  }
  .prev {
    left: 0;
    display: none;
  }
  .next {
    right: 0;
    display: none;
  }
  .bigbox {
    overflow: hidden;
    width: 740px;
    height: 190px;
    margin: auto;
  }

}
#switcher {
  height: 190px;
  left: 0px;
}
.content_1.content_2 {
  width: 100%;
  float: left;
}
.box {
  transition:all .7s ease 0s;
  width: 255px;
  height: 190px;
  float: left;
  border-left: 3px white solid;
  background-size: cover;
  margin: 0;
  overflow: hidden;
}
.box:hover {
 opacity:0.5;
}
.shadow {
  width: 255px;
  height: 40px;
  /* opacity: 1; */
  background-color: rgba(0, 0, 0, 0.45);
  filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#66000000,endColorstr=#66000000);
  margin-top: 150px;
  color: white;
  font-size: 14px;
}
.shadow a {
  display: inline-block;
  width: 320px; overflow:hidden;
  height: 40px;
  line-height: 40px;
  color: white;
  text-decoration: none;
  margin-left: 18px;
}