.scrollTop {
    position: fixed;
    text-align: center;
    background: rgba(0,0,0,0.4);
    text-decoration: none;
    z-index: 99999;
    bottom: 125px;
    right: 0;
    opacity: 0;
    transition: all 0.4s ease-in-out 0s;
    border-top-left-radius: 5px;
    border-bottom-left-radius: 5px;
    overflow: hidden;
}

.scrollTop a{
    display:block;
    padding:10px 15px;
}