body { font-family: Arial, sans-serif; margin: 0; padding: 0; background-color: #f4f4f4; color: #333; }
header { background: #0056b3; color: #fff; padding: 20px; text-align: center; }
nav ul { list-style: none; padding: 0; }
nav ul li { display: inline; margin: 0 15px; }
nav ul li a { color: #fff; text-decoration: none; font-weight: bold; }
main { max-width: 800px; margin: 20px auto; background: #fff; padding: 20px; box-shadow: 0 0 10px rgba(0,0,0,0.1); }
.hero { background: #e9ecef; padding: 20px; text-align: center; border-radius: 5px; }
footer { text-align: center; padding: 20px; font-size: 0.8em; color: #666; }