Sizes from sm to xl are available.
Large is the default size.
Use small button sparingly because they are harder to read and a smaller tap target.
Also use extra large button sparingly.
<p>
<button class="mzp-c-button mzp-t-sm" type="button">Learn more</button>
</p>
<p>
<button class="mzp-c-button mzp-t-md" type="button">Learn more</button>
</p>
<p>
<button class="mzp-c-button mzp-t-lg" type="button">Learn more</button>
</p>
<p>
<button class="mzp-c-button mzp-t-xl" type="button">Learn more</button>
</p>