.navbar{display:flex;gap:1rem;padding:1rem;background:#f8f9fa;border-bottom:1px solid #eaeaea}.navbar a{text-decoration:none;color:#333;font-weight:500}.navbar a:hover{color:#007bff}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Open Sans,Helvetica Neue,sans-serif;background:#fff;color:#222}main{padding:2rem}