Libraries

https://github.com/remarkjs/react-markdown#use-custom-components-syntax-highligh

Guides

https://www.thefullstackblog.com/highlight-code-blocks-in-markdown-files-with-react-markdown-and-react-syntax-highlighter-libraries

https://amirardalan.com/blog/syntax-highlight-code-in-markdown

theme demo

https://react-syntax-highlighter.github.io/react-syntax-highlighter/demo/prism.html