html, body {
    height: 100%;
    margin: 0;
    padding: 0;
}

#main {
    position: fixed;
    width: 100%;
    height: 100%;
    left: 0;
    top: 0;
}

#root {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
}