.about_active{background-color:#009fd6}.main{margin-top:-1px;background-color:#f6f6f3}.about_m{position:relative;min-height:885px!important;margin-top:-50px;z-index:999}.aboutLeft{position:absolute;left:0;top:0;width:250px;background-color:#505050}.aboutRight{margin-left:250px}.on_fixed{position:fixed;top:90px}.aboutLeft li a{padding-right:20px}.aboutLeft .sub{height:0;overflow:hidden;background:#6d7c87;position:relative}.aboutLeft .sub a{line-height:50px;font-size:16px}.a{min-height:300px;transition:all .4s}.aboutLeft ul li{width:250px;line-height:95px;text-align:center;background:#505050}.mainLeft{position:relative;min-height:885px!important;margin-top:-50px;z-index:999}.y_rotate{transform:rotate(0);transition:all .5s}.y_rotate1{transform:rotate(180deg);transition:all .5s}