Built with reference to this post

The section between (and including) the two --- lines is called YAML Front Matter. It’s a way to write data into our template file that can be used by Liquid templates.

The layout key tells Eleventy to look for files inside of the _includes folder to wrap around the content of the template. Specifically, we want our blog post to use the _includes/layout.liquid file as a wrapper layout.

The double curly braces in layout.liquid indicate a variable: e.g., where the markdown content will go