An introduction to Haml & Sass. Haml is an alternative to the default Rails template language. Haml is based on one primary principle. Markup should be beautiful. Sass is an extension of CSS3, adding nested rules, variables, mixins, selector inheritance, and more. It’s translated to well-formatted, standard CSS using the command line tool or a web-framework plugin.

An introduction to Haml & Sass. Haml is an alternative to the default Rails template language. Haml is based on one primary principle. Markup should be beautiful. Sass is an extension of CSS3, adding nested rules, variables, mixins, selector inheritance, and more. It’s translated to well-formatted, standard CSS using the command line tool or a web-framework plugin.