Gantry 5 Tutorials - Documentation

If you updated Gantry 5.5 on your Joomla! 3 site and having issues with error-

Go to and open ROOT/templates/r_TEMPLATE/scss/mixins/_css3.scss

Replace:

//Box Shadow
 @mixin box-shadow($value: none) {
   @include prefix('box-shadow', $value);
 }

With:

//Box Shadow
 @mixin box-shadow($value...) {
   @include prefix('box-shadow', $value);
 }

Clear cache if necessary.