body{margin:0;font-family:sans-serif}section{padding:40px;text-align:center}nav{display:flex;justify-content:space-between;padding:15px;background:#222;color:#fff}a{margin:0 10px;color:#fff;text-decoration:none}input,textarea{display:block;margin:10px auto;padding:10px;width:80%}button{padding:10px 20px}