I go with the core idea of progressive enhancement: your front end code can improve what the server sent it rather than completely replacing it - if your style changes don’t break the semantic meaning, you don’t need to change any of your front end code.

What I typically do is render the first bit of data on the server and have the client JS use that as a <template> for changes or new records. That ensures that anything done on the client always matches without you needing to code cosmetics in multiple places but also means your pages load seconds faster than a SPA because the first view is ready to go. When the user saves the entry, you can swap what you generated with the server response a few milliseconds later.