body{max-width:720px;margin:0 auto;padding:2rem 1rem;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Noto Sans,Ubuntu,Cantarell,Helvetica Neue,sans-serif}form{display:flex;flex-direction:column;gap:.75rem;max-width:320px}.error{color:#c0392b}header{display:flex;justify-content:space-between;align-items: center;margin-bottom:1rem}