I’m looking around for a boilerplate for a sensible HTML and/or CSS style guide that’s considered industry standard, or at least sufficiently neutral/accepted/non-controversial enough for when my code is passed on to other web developers so that they don’t need to reinvent the wheel each time.

I’ve collected and culled a short list of guides and will be looking through for inspiration, some of which are:

* Mark Otto’s code guide: https://github.com/mdo/code-guide

* 18F’s CSS guide: https://18f.gsa.gov/2016/01/11/introducing-the-css-coding-style-guide/

* Google style guide: https://google.github.io/styleguide/htmlcssguide.xml

There are many more of these around the web, and I don't need to invent a(nother) new one.

Do you have a preferred or recommended HTML/CSS style guide? I'd appreciate a pointer.

Thanks very much in advance.