<a class="button">...</a>

<button class="cancel">...</button>

<button disabled>...</button>

<a class="button cancel">...</a>

<a class="button disabled">...</button>

<button class="secondary">...</button>

<button class="cancel secondary">...</button>

<button class="secondary" disabled>...</button>

<a class="button cancel secondary">...</a>

<a class="button secondary" disabled>...</a>

  <button class="arrow">...</button>

  <button class="blue arrow" disabled>...</button>

  <a class="button arrow">...</a>

  <a class="button blue arrow" disabled>...</a>