Install compass-h5bp-plugin by entering the following commands in the terminal:
sudo apt update sudo apt install compass-h5bp-plugin
Compass extension for HTML5 Boilerplate
Compass is a framework for compiling CSS from similar yet more flexible Sass (either .sass or .scss) source files. . This package contains a Compass extension of HTML5 mixins extracted from HTML5 Boilerplate (H5BP). This includes Normalize - a modern, HTML5-ready alternative to CSS resets.