#back2Top{width:30px;line-height:30px;overflow:hidden;z-index:999;display:none;cursor:pointer;transform:rotate(270deg);position:fixed;bottom:50px;right:1%;background-color:#09f;color:#ddf;text-align:center;font-size:18px;text-decoration:none}#back2Top:hover{background-color:#ddf;color:#000}