.back-to-top{position:fixed;bottom:15px;right:15px;transition:width .2s ease-in,height .2s ease-in;z-index:101;cursor:pointer;-webkit-transform:scale(0);transform:scale(0);box-shadow:0 0 21px 0 rgba(0,0,0,.2);background-color:#db011c;border-radius:2px;width:40px;height:30px}@media screen and (max-width:767px){.back-to-top{bottom:5px}.back-to-top:hover{background-color:#db011c;height:30px;width:40px}}.back-to-top.one-key{background-color:#076ae6!important}.back-to-top.active{-webkit-transform:scale(1);transform:scale(1)}.back-to-top:hover{width:45px;height:45px}.back-to-top .icon{text-align:center;margin:0 auto;color:#fff;font-size:24px;position:absolute;top:50%;left:50%;margin-top:-12px;margin-left:-13px;-webkit-transform:rotate(-90deg);transform:rotate(-90deg)}