body { margin:0; font-family: monospace; background:#0b0b12; color:#c8c8ff; }
.shell { padding:20px; }
header { font-size:24px; margin-bottom:10px; color:#9b7bff; }
nav a { margin-right:10px; color:#66d9ff; text-decoration:none; }
main { margin-top:20px; }