body { font-family: Arial, sans-serif; background: #f4f4f4; margin: 0; padding: 0; }
nav { background: #0033A0; color: white; padding: 10px; display: flex; justify-content: space-between; }
nav a { color: white; margin-left: 10px; text-decoration: none; }
.container { padding: 20px; background: white; margin: 30px auto; max-width: 800px; border-radius: 8px; box-shadow: 0 0 10px rgba(0,0,0,0.1); }