.material-scrolltop {
    display: block;
    position: fixed;
    width: 0;
    height: 0;
    bottom: 23px;
    right: 23px;
    padding: 0;
    overflow: hidden;
    outline: none;
    border: none;
    border-radius: 2px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.5);
    cursor: hand;
    border-radius: 50%;
    background: #4caf50;
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
    -webkit-transition: all 0.3s cubic-bezier(0.25, 0.25, 0, 1);
    -ms-transition: all 0.3s cubic-bezier(0.25, 0.25, 0, 1);
    -moz-transition: all 0.3s cubic-bezier(0.25, 0.25, 0, 1);
    -o-transition: all 0.3s cubic-bezier(0.25, 0.25, 0, 1);
    transition: all 0.3s cubic-bezier(0.25, 0.25, 0, 1);
}

.material-scrolltop:hover {
    background-color: #4caf50;
    text-decoration: none;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.5), 0 3px 15px rgba(0, 0, 0, 0.5);
}

.material-scrolltop.reveal {
    width: 56px;
    height: 56px;
}

.material-scrolltop span {
    display: block;
    font-size: 25px;
    color: #fff;
}