body {
    font-family: Arial, sans-serif;
    margin: 40px;
    background: #f4f6f8;
    color: #333;
}

header {
    text-align: center;
    background: #1f2933;
    color: white;
    padding: 30px;
}

section {
    background: white;
    padding: 20px;
    margin: 20px 0;
    border-radius: 8px;
}