The Roam CSS System is a modular, block-based approach for changing the look and feel of Roam Research. It has been thoughtfully designed to allow easy customization by the non-tech-affine end user. — Updated on August, 7th regarding new available themes lesswrong and things. The idea behind it Roam Research is an awesome tool for note-taking, interconnecting ideas, brainstorming, structuring topics — in short, it contains almost everything you need to build a second brain.