// https://html-online.com/articles/dynamic-scroll-back-top-page-button-javascript/
#page-wrap {
    margin: auto;
    max-width: 800px;
    padding: 50px;
}
#back2Top {
/*
    width: 40px;
    line-height: 40px;
 */
    overflow: hidden;
    z-index: 999;
    display: none;
    cursor: pointer;
/*
    -moz-transform: rotate(270deg);
    -webkit-transform: rotate(270deg);
    -o-transform: rotate(270deg);
    -ms-transform: rotate(270deg);
    transform: rotate(270deg);
 */
    position: fixed;
    bottom: 50px;
    right: 0;
/*
    background-color: #DDD;
    color: #555;
    text-align: center;
    font-size: 30px;
 */
    text-decoration: none;
}
/*
#back2Top:hover {
    background-color: #DDF;
    color: #000;
}
*/