Examples
Default styling
Primary buttons
.btn--black-ghost
Black ghost button
Primary buttons
.btn--white-ghost
White ghost button
Primary buttons
.btn--red
Red button
Primary buttons
.btn--blue
Blue button
Primary buttons
.btn--purple
Purple button
Primary buttons
.btn--white
White button
Primary buttons
:hover
Button hover state
Primary buttons
:active
Button active state
Primary buttons
:focus
Button focus state
Primary buttons
Markup: components/buttons/buttons.twig
<a class="btn {{modifier_class}}" href="#">
  Primary buttons
</a>
<button class="btn {{modifier_class}}">Native button</button>
Source: base-styleguide.scss, line 30