body { font-family: Arial, sans-serif; line-height: 1.6; margin: 0; padding: 0; }
.container { max-width: 900px; margin: 0 auto; padding: 20px; }
header { background: #f4f4f4; padding: 20px; text-align: center; }
footer { text-align: center; padding: 20px; background: #f4f4f4; margin-top: 40px; }
article { margin-bottom: 40px; border-bottom: 1px solid #eee; padding-bottom: 20px; }
h1, h2, h3 { color: #333; }
a { color: #0066cc; text-decoration: none; }
a:hover { text-decoration: underline; }