* {margin: 0;padding: 0;}
ul {list-style: none;}
.tab {width: 100%;background-image: url(bg1.png);background-size: cover;}
.tab .box {width: 1170px;position: relative;margin: 0 auto;height: 600px;}
.tab .box .menus {width: 200px;height: 550px;background:#1E61BA;float: left;margin-top: 20px;border-radius: 10px;overflow: hidden;}
.tab .box .menus li {width: 200px;height: 68.75px;background:#1E61BA;font-size: 20px;color: #fff;text-align: center;border-bottom: 1px solid rgba(0,0,0,0.5);line-height: 68.75px;transition: all 0.3s;-moz-transition: all 0.3s;-o-transition: all 0.3s;-webkit-transition: all 0.3s;}
.tab .box .menus li:nth-child(7) {border-bottom: none;}
.tab .box .bg {height: 68.75px !important;background:#D7322E !important;line-height: 68.75px !important;}
.tab .right {float: left;width: 950px;margin-top: 20px;height: 550px;overflow: hidden;margin-left:10px;border-radius: 10px;background: rgba(0,0,0,0.5);}
.tab .tab_right {width: 950px;height: 550px;color: #fff;text-align: center;position:relative;}
.tab .tab_right img {width: 100%;position: absolute;top: 50%;transform: translateY(-50%);left: 0;}
.tab .scroll {transition: all 0.5s;-moz-transition: all 0.5s;-o-transition: all 0.5s;-webkit-transition: all 0.5s;}