.go-top {
    position: fixed;
    bottom: 1rem;
    right: -10rem;
    padding: 20px;
    display: block;
    cursor: pointer;
    z-index: 9;
    transition: .3s;

}
.go-top:after {
    background-color: #fff;
    border-radius: 100%;
    padding: 0 9px;
    /*content: '\25B3';*/
    content: '\25B2';
    color: #000000;
    position: absolute;
    bottom: 10px;
    right: 25px;
    font-size: 20px;
    box-shadow: 0 0 2px 1px rgba(0, 0, 0, 0.15);
}

.go-top:hover:after {
    background-color: #05668d;
    box-shadow: 0 0 10px 1px #777;
    color: white;
}