.scroll-to-top {
    position: fixed;
    bottom: -100px;
    right: 50px;
    
    width: 50px;
    height: 50px;
    transition: 1s;
    display: grid;
    place-items: center;
    z-index: 100;
}

@media screen and (max-width: 767px) {
    .scroll-to-top {
        right: 20px;
    }
}