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

*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    min-width: 320px;
    background: #fff;
    color: #111;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
}

.zv-page {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 32px;
}

.zv-test {
    width: min(720px, 100%);
    text-align: center;
}

.zv-test__mark {
    margin-bottom: 20px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .22em;
}

.zv-test h1 {
    margin: 0;
    font-size: clamp(44px, 10vw, 104px);
    line-height: .95;
    letter-spacing: -.05em;
}

.zv-test p {
    margin: 24px 0 8px;
    font-size: 18px;
    line-height: 1.5;
}

.zv-test small {
    color: #666;
    font-size: 13px;
}