<label>
Option
<input class="ser-checkbox-primary-small" type="checkbox" />
</label>
<label>
Option
<input class="ser-checkbox-primary-medium" type="checkbox" />
</label>
<label>
Option
<input class="ser-checkbox-primary-large" type="checkbox" />
</label>
<label>
Option
<input class="ser-checkbox-secondary-small" type="checkbox" />
</label>
<label>
Option
<input class="ser-checkbox-secondary-medium" type="checkbox" />
</label>
<label>
Option
<input class="ser-checkbox-secondary-large" type="checkbox" />
</label>