html {
    scroll-behavior: smooth;
}

.back-to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    background-color: #000;
    color: #fff;
    text-align: center;
    line-height: 50px;
    font-size: 24px;
    border-radius: 5px;
    cursor: pointer;
    display: none;
    z-index: 999;
}

.back-to-top svg {
    width: 23px !important;
    margin: 9px 0 !important;
    stroke: #fff;
}

.back-to-top:hover {
    background-color: #333;
}