body { background: #000; color: #FFF; font-family: Arial, Sans-serif; font-size: 12px; line-height: 1.5; padding: 18px; }
h1 { font-size: 18px; margin: 12px 0; }
p { font-size: 12px; margin-bottom: 18px; }
#main { margin: 36px auto; text-align: center; width: 300px; }