Making a Sass mixin with optional arguments

Question

I am writing a mixin like this:

@mixin box-shadow($top, $left, $blur, $color, $inset:\"\") {
    -webkit-box-shadow:          


        

Answer 1

Super simple way

Just add a default value of none to $inset - so

@mixin box-shadow($top, $left, $blur, $color, $inset: none) { ....

Now when no $inset is passed nothing will be displayed.