For static HTML, what is your go to template?

Depends on the need...I have a quick LibreOffice HTML template in light or dark. I include metas for mobile use in the document properties. I also have a PHP controller that can easily modify these if I need it to be more dynamic.

Otherwise I use https://picocss.com/ for some things.

For publishing I either drop the HTML file in a folder with or without a controller, or start a new endpoint by creating a new section in TXP [1] and drop in whatever HTML and txp xml tags I need there.

1. https://textpattern.com/

https://www.getzola.org/ https://github.com/getzola/zola

Manual Matuzovic has a good HTML boilerplate, and he goes line-by-line into what it does. https://www.matuzo.at/blog/html-boilerplate/

Hugo static site generator is pretty nice...