.win { margin: 20px auto; position: relative; overflow: hidden; }
.win .box > div { background: no-repeat center center #eee; background-size:auto 100% }
.title { width: 100%; height: 10px; background: #eee; position: relative; }
.title a { width: 20%; height: 100%; float: left; text-align: center; line-height: 30px; font-size: 15px; color: #009797; text-decoration: none; position: relative; z-index: 1; }
.title .float { width: 20%; height: 100%; background: #009797; position: absolute; }
.box { width: 100%; height: 270px; position: relative; }
.box div { width: 100%; height: 100%; position: absolute; left: -100%; font-size: 70px; text-align: center; line-height: 270px; top: 0; color: #fff; }
.rightB { width: 50px; height: 70px; font-size: 20px; color: #fff; background: rgba(0,0,0,0.5); position: absolute; right: 0; top: 40%; line-height: 70px; text-align: center; cursor: pointer; display: none; }
.leftB { width: 50px; height: 70px; font-size: 20px; color: #fff; background: rgba(0,0,0,0.5); position: absolute; left: 0; top: 40%; line-height: 70px; text-align: center; cursor: pointer; display: none; }