Highlight Lines doesn't work

[chaveamin]

I'm using Nextjs 14 and MDX for blog posts. used {1-3,4} to highlight some lines. It does add the attributes but doesn't add the css for colors

[atomiks]

There is no CSS as it's an unstyled library that provides logic, you add it yourself.

[atomiks]

Added some docs, hopefully it's clearer: docs: add ToC and Styles sections