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

body {
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial;
    background: #f7f7f7;
    color: #111;
    -webkit-font-smoothing: antialiased;
}

.msg {
    text-align: center;
    padding: 24px;
    max-width: 90ch;
}

.msg h1 {
    font-size: 4rem;
    margin: 0 0 1rem;
    font-weight: 700;
}

.msg p {
    font-size: 1.35rem;
    margin: 0.5em 0;
}