body{font-family:Arial;background:#020617;color:#fff;margin:0;padding:20px}
nav{display:flex;justify-content:space-between}
a{color:#22c55e;margin:5px;text-decoration:none}
.hero{text-align:center;margin-top:50px}
.btn{background:#22c55e;color:#000;padding:10px 20px;border-radius:5px}