#back-to-top {
    background-color: rgba(20,160,230,0.6);
    bottom: 10px;
    box-shadow: 0 0 5px rgba(20,160,230,0.5);
    color:rgba(20,160,230,0.8);
    padding: 10px 10px;
    position: fixed;
    right: 353px;
    cursor: pointer;
    border-radius:8px;
}