*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}#app{min-height:100vh;display:flex;flex-direction:column}.navbar{display:flex;align-items:center;padding:12px 24px;background:#2c3e50;color:#fff;gap:16px}.navbar a{color:#fff;text-decoration:none}.navbar button{margin-left:auto;padding:6px 12px;cursor:pointer}