body { font-family: Arial, sans-serif; margin: 0; padding: 0; background: #f9f9f9; color: #333; }
header { background: #004aad; color: white; padding: 1em; text-align: center; }
nav a { color: white; margin: 0 1em; text-decoration: none; }
main { padding: 2em; }
footer { background: #222; color: white; text-align: center; padding: 1em; position: fixed; bottom: 0; width: 100%; }