.control-box {  width: 1400px;  height: 670px; background-size: 1055px; background-repeat: no-repeat; margin-top:50px; margin-left: auto;  margin-right: auto;}
.control-box ul { list-style: none;  position: relative;}
.control-box ul li { position: absolute; top: 310px; cursor: pointer;}
.prev { left: 0;}
.next { right: 0;}
.bigbox { overflow: hidden; width: 1200px; height: 610px; margin: auto;}
#switcher { height: 610px; left: 0px;}
.content_1.content_2 { width: 100%;float: left;}
.box { transition:all .7s ease 0s; background-color:#f4f4f4; overflow:hidden; width: 380px; height: 610px; float: left; border-left:23px white solid; border-radius: 0 35px 0px 35px;}
.box img{ width:340px; height:340px; margin-left:20px; margin-top:30px;}
.box h2{ font-size:20px; width:340px; margin-left:20px; line-height:25px; height:75px; margin-top:25px; margin-bottom:15px;}
.box h2 a{ color:#117bc1}
.box p{ font-size:16px; color:#666; line-height:30px; margin-top:20px; width:340px; margin-left:20px;}
.box:hover { opacity:0.5;}