body { font-family: Arial, sans-serif; line-height: 1.6; }
header { background: #333; color: #fff; padding: 20px; text-align: center; }
nav { display: flex; justify-content: center; background: #444; }
nav a { color: white; padding: 14px 20px; text-decoration: none; }
nav a:hover { background: #555; }
section { margin: 20px 0; }
footer { background: #333; color: #fff; text-align: center; padding: 10px; position: fixed; width: 100%; bottom: 0; }