.dark .el-backtop{position:fixed;background-color:#1d1e1f;width:40px;height:40px;border-radius:50%;color:#409eff;display:-webkit-box;display:-ms-flexbox;display:flex;-webkit-box-align:center;-ms-flex-align:center;align-items:center;-webkit-box-pack:center;-ms-flex-pack:center;justify-content:center;font-size:20px;-webkit-box-shadow:0 0 6px rgba(0,0,0,.72);box-shadow:0 0 6px rgba(0,0,0,.72);cursor:pointer;z-index:5}.dark .el-backtop:hover{background-color:#2b2b2c}