TLDR
Themes provide a powerful way to share an opinionated set of configurations across multiple Gatsby sites. The features built into your theme will be abstracted out of your site and packaged as a dependency. In this tutorial, we’ll set up a development workspace to build and demo a simple theme. Our theme will support MDX pages, an MDX blog, frontmatter, syntax highlighting in code blocks, responsive images, and a custom theme built with the Theme-UI spec.via the TL;DR App
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