Code Blocks needed for small CSS adjustments?

Hi everyone,

I'm currently evaluating to migrate my blog to SquareSpace, and I have a small question. In blog posts I would like to add some special text styles to certain words for individual highlighting. Is it correct that the only possibility for this is to use Code Blocks instead of normal Text Blocks and do the CSS within (with Custom Styles)? Being a developer I have no problems with code sections, but as far as I have understood, with a Code Block I'd lose all other editor features like easy linking, easy italics and so on.

Or is there a way to individually style some words within Text Blocks that I've not yet figured out? 

Thanks

Ben