#dark-toggle {
    display: block;
    position: fixed;
    right: 50px;
    bottom: 90px;
    width: 40px;
    height: 40px;
    line-height: 40px;
    text-align: center;
    font-size: 15px;
    padding: 0;
    border: 1px solid #4636ff;
    background: #4636ff;
    color: #fff;
    cursor: pointer;
    z-index: 1001;
}