body {
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    height: 100vh;
}

#code {
    font-size: 10rem;
    font-weight: bold;
    line-height: 7rem;
}

#title {
    font-size: 5rem;
}

#msg {
    margin-top: 2rem;
    font-size: 1rem;
    width: 40vw;
    text-align: center;
}