starter-gulp-nunjucks-sass

yarn install
yarn dev

REF.

1. Nunjucks

   A rich and powerful templating language for JavaScript.

2. Jinja

   Jinja is a fast, expressive, extensible templating engine. Special placeholders in the template allow writing code similar to Python syntax. Then the template is passed data to render the final document.

3. sass / scss

   Sass is the most mature, stable, and powerful professional grade CSS extension language in the world.