body { font-family: Arial, sans-serif; line-height: 1.6; padding: 20px; max-width: 800px; margin: auto; color:#222; }
h1 { color: #2e7d32; }
h2 { color: #1b5e20; }
.btn { display:inline-block; padding:12px 24px; background:#28a745; color:#fff; text-decoration:none; border-radius:5px; }
.btn:hover { background:#218838; }