body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
}

header {
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 20px;
}

h1 {
    font-size: 36px;
}

main {
    max-width: 800px;
    margin: 20px auto;
    padding: 20px;
    background-color: #f9f9f9;
    border: 1px solid #ccc;
}

h2 {
    font-size: 24px;
    margin-top: 0;
}

p {
    font-size: 16px;
    line-height: 1.5;
}