Forma 36 is an open-source design system by Contentful created with the intent to reduce the overhead of creating UI by providing tools and guidance for digital teams building and extending Contentful products.
Resources for designers and developers
Everything you need to get started building for Contentful
Prototype in Figma with Forma 36 components
Copy the F36 UI Kit to Figma, publish it as a Team library and start prototyping. You need a Figma account to do this.