@govbr-ds/core/dist/components/button/examples/button-block-dark-mode.html

Padrão Digital de Governo

<div class="p-3 bg-blue-warm-vivid-90">
  <button class="br-button block primary dark-mode mb-3" type="button">Primário
  </button>
  <button class="br-button block secondary dark-mode mb-3" type="button">Secundário
  </button>
  <button class="br-button block dark-mode" type="button">Terciário
  </button>
</div>