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

body {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

#webApp {
    width: 1024px;
    height: 768px;
    max-width: 100%;
    max-height: 100%;
    overflow: hidden;
}