body{background-color:#ff69b4;color:#000;font-family:Arial,sans-serif;margin:0;padding:0;text-align:center}header{padding:50px 0;background-color:#000;color:#ff69b4}button{padding:15px 30px;font-size:16px;background-color:#000;color:#ff69b4;border:none;cursor:pointer;border-radius:8px}button:hover{background-color:#ff1493}.hidden{display:none;margin-top:20px}