Why we USE Sass Mixin function?
Basically we use Mixin function to define the styles. Mixin is very SIMILAR to a function. And we can re-use style throughout the style sheet. And one of most important aspect is that we need not to resort the nonSemantic classes and example of that is .float-left. With the help of Mixin we can store multiple values or we can say parameters and CALL a function to avoid writing repetitive codes. And its name can use underscores and hyphens INTERCHANGEABLY. And Mixins output lines of SASS code can be compile directly into css style.