Developer templates HTML file

Hi, I’m new to WordPress, and am currently building my first site. I am looking to build a child theme from a developer template. I’ve looked at the whiteboard and buffet frameworks, and have downloaded them to my local directory. However, I would like to have the HTML file that was used to build the framework, so I can easily cross-reference my CSS changes and also deconstruct the corresponding PHP code. Does anyone know of a popular, well-supported, often updated framework that works with child themes and includes an HTML file for reference?

Thanks very much, and sorry if this is a repost!!