body{font-family:Arial;margin:0;background:#111;color:#eee;line-height:1.6}
header,nav,section,footer{padding:20px;}
nav a{color:#fff;margin-right:15px;text-decoration:none;font-weight:bold}
section{background:#1a1a1a;margin:20px;border-radius:8px}
h1,h2{color:#4cb4ff}