body{font-family:Arial;margin:0}
.topbar{background:#111;color:#fff;padding:10px}
.navbar{padding:20px;display:flex;gap:20px}
.hero{padding:80px;background:#eee}
.products{display:flex;gap:20px;padding:40px}
.card{border:1px solid #ddd;padding:20px;flex:1}