.testheight {
    height:1200px;
    font-size:20px;
    text-align:center;
    padding:100px 20px;
}
.scrolltop {
    display:none;
    width:100%;
    margin:0 auto;
    position:fixed;
    bottom:20px;
    right:10px;
}
.scroll {
    position:absolute;
    right:20px;
    bottom:20px;
    background:#cb1d1d;
    padding:15px;
    text-align: center;
    margin: 0 0 0 0;
    cursor:pointer;
    transition: 0.5s;
    -moz-transition: 0.5s;
    -webkit-transition: 0.5s;
    -o-transition: 0.5s;
}
.scroll:hover {
    background:#cb1d1d;
    transition: 0.5s;
    -moz-transition: 0.5s;
    -webkit-transition: 0.5s;
    -o-transition: 0.5s;
}
.scroll:hover .fa {
    padding-top:-10px;
}
.scroll .fa {
    font-size:30px;
    margin-top:-5px;
    margin-left:1px;
    transition: 0.5s;
    -moz-transition: 0.5s;
    -webkit-transition: 0.5s;
    -o-transition: 0.5s;
}