This section is only relevant if you work with the Sass version of Materialize.
First, you need to install Sass in your working directory:
gem install sass
When you have Sass installed on your project and you want to update your output .css file, you need to use the following command:
sass sass/materialize.scss public/style.css
NOTE: the second parameter sass/materialize.scss is the path to your .scss file, and the last parameter sass/style.css is the path to your output folder when the file .css file is located.
If you want to avoid this command every time when you do a change, you can run a watch command:
sass --watch sass/sass:public/stylesheets
NOTE: this command watches all Sass files in the scss directory for changes and then update the style file into our public directory.