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

body {
    display: flex;
    align-items: center;
    justify-content: center;
    background: #000000;
    color: #00ff66;
    font-family: Arial, Helvetica, sans-serif;
}

h1 {
    margin: 0;
    font-size: clamp(2.5rem, 8vw, 6rem);
    font-weight: 700;
    letter-spacing: 0.08em;
}