body {
    font-family: sans-serif;
    margin: 0;
    background: #f5f7fb;
    color: #222;
}

.page {
    width: min(720px, calc(100% - 32px));
    margin: 40px auto;
    padding: 24px;
    background: #fff;
    border-radius: 8px;
}

form {
    display: grid;
    gap: 12px;
}

input,
button {
    padding: 10px;
    font-size: 16px;
}