Wishlist: Add design elements for global "changelog" and "what's new" pages

[amotl]

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The "changelog" and "what's new" pages of Hetzner look very pleasant. It would be nice to be able to easily layout such pages based on grid/flexbox technologies, and other foundation components from sphinx{design}.

-- https://docs.hetzner.cloud/changelog
-- https://docs.hetzner.cloud/whats-new