#page-top {
    position: fixed;
    right: 2%;
    bottom: 2%;
    font-size: 1.2rem;
    line-height: 1.2rem;
    background: #fff;
    color: #737373;
    padding: 2%;
    border: solid 1px;
    border-radius: 50%;
    box-shadow: 0 2px 10px -6px rgba(0,0,0,.5), 0 3px 10px -4px rgba(0,0,0,.2);
}