body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    color: #333;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    margin: 0;
}

header {
    background-color: #4CAF50;
    color: white;
    padding: 10px 20px;
    border-radius: 5px;
}

main {
    margin: 20px;
}

h1, h2 {
    margin: 0;
}

footer {
    position: absolute;
    bottom: 10px;
    font-size: 0.8em;
}