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.backtracking_tip{font-size:14px;color:#999;text-align:center}#backtracking 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#fff no-repeat center center;-webkit-background-size:20px 20px;background-size:20px 20px;-webkit-border-radius:50%;border-radius:50%;position:relative}#backtracking 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#fff no-repeat center center!important;-webkit-background-size:20px 20px!important;background-size:20px 20px!important}#backtracking 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40px;background-size:40px;position:absolute;top:0;left:0;-webkit-transform-origin:center;-moz-transform-origin:center;-ms-transform-origin:center;transform-origin:center;-webkit-animation:rotateIn .7s linear infinite;-moz-animation:rotateIn .7s linear infinite;animation:rotateIn .7s linear infinite}@-webkit-keyframes rotateIn{from{transform:rotate(0);-webkit-transform:rotate(0)}to{transform:rotate(-360deg);-webkit-transform:rotate(-360deg)}}@-moz-keyframes rotateIn{from{-moz-transform:rotate(0);transform:rotate(0);-webkit-transform:rotate(0)}to{-moz-transform:rotate(-360deg);transform:rotate(-360deg);-webkit-transform:rotate(-360deg)}}@keyframes rotateIn{from{-moz-transform:rotate(0);transform:rotate(0);-webkit-transform:rotate(0)}to{-moz-transform:rotate(-360deg);transform:rotate(-360deg);-webkit-transform:rotate(-360deg)}}.backtrack_bottom{margin:0 10px;padding-bottom:6px;color:#999}.introducer_name{margin:0 auto 10px;text-align:center;color:#999}.introducer_box{position:fixed;left:0;bottom:-187px;width:100%;background:#fff;-webkit-transition:all .3s ease 0s;-moz-transition:all .3s ease 0s;transition:all .3s ease 0s;z-index:13;padding:33px 20px 45px;-webkit-border-top-right-radius:15px;border-top-right-radius:15px;-webkit-border-top-left-radius:15px;border-top-left-radius:15px;background-color:#fff;font-size:13px}.introducer_box .intro_cross{position:absolute;top:19px;right:14px;display:inline-block;width:15px;height:15px;background:url(https://assets-cdn.xiangrikui.com/frontend-m/xrk-mall-frontend/xrk-mall-concat/static/cdn/img/close_icon_e20df0e.png) center center no-repeat;-webkit-background-size:contain;background-size:contain}.introducer_box 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