body{font-family:sans-serif;background:#0b1020;color:#fff;margin:0}header{display:flex;justify-content:space-between;padding:20px;background:#111}nav a{margin:10px;color:#fff} .hero{text-align:center;padding:100px} .btn{background:#7c5cff;padding:10px;color:#fff} .btn2{background:#22d3ee;padding:10px;color:#000} .grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;padding:40px} footer{text-align:center;padding:20px}