Is there a way to adjust the heading size of the heading in a post that’s on the left and then a separate size for the stacked vertical thumbnails on the right when using a Post Block. Like in your demo, the bigger side I would be able to adjust the size of that heading (and choose h1, h2, h3, etc) and then for the smaller stacked thumbnails I would want to choose a separate heading type (h1, h2, h3, etc) and the font size. OR does this have to be done via CSS.
The current customization options changes the title for all of the posts. It is useful for grid and blog styles but not for those which are more magazine style. Will consider such an option in future – for now we just wanted to keep it simple.