body{background:#111;color:white;font-family:Arial;text-align:center;} .product{background:#222;width:300px;margin:20px auto;padding:20px;border-radius:8px;} .btn{display:inline-block;padding:10px 15px;background:dodgerblue;color:white;border-radius:5px;text-decoration:none;} input{width:90%;padding:10px;margin:10px 0;border-radius:5px;border:none;}