body {
    font-family: sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    margin: 0;
    background-color: #f4f4f4;
    text-align: center;
}

main {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

h1 {
    color: #333;
}

p {
    color: #666;
}

footer {
    margin-top: 20px;
    font-size: 0.9rem;
    color: #999;
}