body{font-family:Arial;background:#0f2027;color:#fff}
.container{max-width:900px;margin:60px auto;padding:40px;background:rgba(0,0,0,.5);border-radius:12px}
.btn{display:inline-block;padding:10px 16px;background:#00c6ff;color:#000;margin:6px;text-decoration:none;border-radius:6px}
input{padding:10px;margin:6px;width:100%}