.scroll-button {
    position: fixed;
    background-color: gainsboro;
    color: #666;
    padding: 10px;
    cursor: pointer;
    z-index: 1000;
    border-radius: 10px;
    width: 40px;
    height: 45px;
    text-align: center;
    box-shadow: 0 2px 6px black;
}

.scroll-button:hover {
    position: fixed;
    background-color: goldenrod;
    color: #fff;
}
.scroll-button.top {
    top: 100px;
    right: 10px;
}
.scroll-button.bottom {
    bottom: 100px;
    right: 10px;
}