body {
    font-family: Arial, sans-serif;
    background: #f5f5f5;
    margin: 0;
    padding: 0;
}

header {
    background: #333;
    color: #fff;
    padding: 40px;
    text-align: center;
}

section {
    margin: 30px auto;
    width: 80%;
    background: white;
    padding: 20px;
    border-radius: 8px;
}

footer {
    text-align: center;
    margin-top: 40px;
    padding: 20px;
    background: #ddd;
}