Sass Mixin Error for IE specific filters like -ms-filter

Question

I\'m trying to make a button mixin like this:

=default_button(!lighter, !darker) 
  :border= 1px !lighter solid
  :background-color #e3e3e3
  :background= -w         


        

Answer 1

Update your syntax to use : instead of = for the property definitions:

=mixin($variable) 
  property: value
  property: $variable

Check out the SASS Reference, though the examples are in SCSS rather than SASS indented style. Full index of the SASS documentation.