body { font-family: Arial, sans-serif; margin: 0; padding: 0; background: #f5f7fa; color: #333; }
header { background: linear-gradient(135deg, #007BFF, #0056b3); color: white; padding: 25px 15px; text-align: center; }
nav { background: #004494; padding: 12px; text-align: center; }
nav a { color: white; margin: 0 18px; text-decoration: none; font-weight: bold; }
nav a:hover { text-decoration: underline; }
section { max-width: 900px; margin: auto; background: white; padding: 25px; margin-top: 20px; border-radius: 8px; box-shadow: 0px 2px 8px rgba(0,0,0,0.1); }
h2 { color: #007BFF; }
footer { background: #222; color: white; text-align: center; padding: 15px; margin-top: 30px; font-size: 14px; }