For individual posts, the "Print to PDF" option in your browser is the cleanest way to preserve the layout .
This would help me locate the exact post or download link for you.
To download an entire website for offline viewing, tools like HTTrack or WebScraper.io are highly recommended by users on Reddit and Bogleheads .
Go to Settings > Manage Blog > Back up Content . This will download an XML file of all your posts . You can also use Google Takeout to export all blog data, including photos .