.scroll-top {
    position: fixed;
    bottom: 20px;
    right: -80px;
    width: 40px;
    height: 40px;
    text-align: center;
    line-height: 35px;
    font-size: 30px;
    border-radius: 2px;
    z-index: 99;
    cursor: pointer;
    transition: 300ms; background: #000/* Default background color */
}

.scroll-top-bg {
    background: #000; /* Default background color */
}

.scroll-top-text {
    color: #fff;
}

.icon-color path {
    fill: #fff; /* Default color */
}

@keyframes rotate {
    from {
        margin-top: 15px;
    }
    to {
        margin-top: 5px;
    }
}

.scroll-visible {
    right: 20px;
    transition: all 400ms;
    transform: rotate(360deg);
}