Predefine the variables below in order to alter and enable specific features.

                $inuit-heading-size-1:  36px !default;
                $inuit-heading-size-2:  30px !default;
                $inuit-heading-size-3:  24px !default;
                $inuit-heading-size-4:  20px !default;
                $inuit-heading-size-5:  16px !default;
                $inuit-heading-size-6:  14px !default;