.nav{position:fixed;z-index:999;height:30px;top:0;width:100%;background:#fff;padding-top:60px}.nav img{width:20px;height:18px;-webkit-user-drag:none;-webkit-touch-callout:none;-webkit-user-select:none;-moz-user-select:none;user-select:none}.nav span{margin-left:18px;font-family:HarmonyHeiTi-Medium;font-size:20px;color:#000;text-align:left;line-height:28px;height:28px}.content{margin-top:110px}.desc{opacity:.9;font-family:HarmonyHeiTi}.cls1,.desc{font-size:14px;color:#000}.cls1{font-family:HarmonyHeiTi-Medium;text-align:left;line-height:19px;margin-top:20px}.cls2{margin-left:24px;padding-top:10px}.cls2 li{font-family:HarmonyHeiTi-Medium;font-size:14px;color:#000;margin-bottom:8px}.ls_mt{margin-top:40px}.isMirror{direction:rtl}.isMirror img{transform:rotate(180deg)}.isMirror .nav span{margin-right:18px;text-align:right}.isMirror .cls1{text-align:right}.isMirror .cls2{margin-right:24px}