Sass is the most mature, stable, and powerful professional grade CSS extension language in the world. I’ve been using Sass for quite sometime and found out that mixins are something any front-end developer would enjoy and take advantage of saving time and being more efficient.
A mixin lets you make groups of CSS declarations that you want to reuse throughout your site. You can even pass in values to make your mixin more flexible.
It save quite a lot of time and helps developers ensuring that the code is not redundant and organized nicely.
I recommend using Compass as they have many built in mixins that simplify developers work.Read More