#root{margin:0;padding:0;text-align:center}.App{font-family:Arial,sans-serif;min-height:100vh;display:flex;flex-direction:column}main{flex-grow:1;padding:20px}nav li a{transition:color .3s ease}nav li a:hover{color:#61dafb}@media (max-width: 768px){nav ul{flex-direction:column;align-items:center;gap:15px}nav li a{padding:5px 0}main{padding:10px}}@media (max-width: 480px){nav{padding:10px 15px}nav ul{gap:10px}}