.scroll-top:hover {
    background-color: rgba(78, 106, 181, 1);
    transition: .4s;
}

.scroll-top {
    position: fixed;
    display: -ms-flexbox;
    display: -ms-flex;
    display: flex;
    -ms-align-items: center;
    -ms-flex-align: center;
    align-items: center;
    -ms-flex-pack: center;
    -ms-justify-content: center;
    justify-content: center;
    right: 130px;
    bottom: 30px;
    width: 60px;
    height: 60px;
    z-index: 99999;
    transition: .4s;
    text-decoration: none;
    background-color: rgba(78, 106, 181, 0.6);
    border-radius: 50%;
}