.download-box{background:#f5f7fa;padding:15px;margin:15px 0;border-left:4px solid #2a5298}.btn-download{display:inline-block;background:#2a5298;color:#fff;padding:10px 15px;text-decoration:none;border-radius:5px;margin-top:10px}.btn-download:hover{background:#1f3c88}