variants\n//\n// Easily pump out default styles, as well as :hover, :focus, :active,\n// and disabled options for all buttons\n\n@mixin button-variant($background, $border, $hover-background: darken($background, 7.5%), $hover-border: darken($border, 10%), $active-background: darken($background, 10%), $active-border: darken($border, 12.5%)) {\n  color: color-yiq($background);\n  @include gradient-bg($background);\n  border-color: $border;\n  @include box-shadow($btn-box-shadow);\n\n  @include hover() {\n...