*{margin: 0;padding: 0;font-family: "微软雅黑";}
html body{font-family:"微软雅黑";height: 100%;min-width: 1420px;}
html a:hover{text-decoration: none;}
.clear{clear:both;}
.clearfix:after {content: ".";display: block;height: 0;visibility: hidden;clear: both;}
.clearfix {zoom: 1;}
.tyst{width: 1200px;margin: 0 auto;}
.zhuanye_s{background: linear-gradient(to right, #469be4 , #162dff) !important;}
.sy{padding-top: 50px;}
.st{padding-bottom: 30px;}
.teac_t, .caret {-webkit-transition: all .3s linear 0s;transition: all .3s linear 0s;}
.teachar-st > a{color: #333 !important;}
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.teachar-st .item.active{padding-left: 215px;padding-right: 10px;width: 425px;}
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.teachar-st .item img{position: absolute;left: -45px;}
.teachar-st .item:nth-of-type(5) img{left: -75px;}
.teachar-st .item .zhuanye_s{position: absolute;bottom: 10px;right: 15px; width: 193px; color: #fff;line-height: 36px;text-align: center;}