.ant-back-top {
            z-index: 10;
            position: fixed;
            right: 100px;
            bottom: 50px;
            height: 40px;
            width: 40px;
            cursor: pointer
        }

        .ant-back-top-content {
            height: 40px;
            width: 40px;
            border-radius: 20px;
            background-color: rgba(64, 64, 64, .4);
            color: #fff;
            text-align: center;
            transition: all .3s cubic-bezier(.645, .045, .355, 1)
        }

        .ant-back-top-content:hover {
            background-color: rgba(64, 64, 64, .6);
            transition: all .3s cubic-bezier(.645, .045, .355, 1)
        }

        .ant-back-top-icon {
            font-size: 20px;
            margin-top: 10px
        }