<div class="input-group">
<input class="input-xxl" type="text" />
<button class="button button-xxl" type="submit">...</button>
</div>
<div class="input-group">
<input class="input-xl" type="text" />
<button class="button button-xl" type="submit">...</button>
</div>
<div class="input-group">
<input class="input-l" type="text" />
<button class="button button-l" type="submit">...</button>
</div>
<div class="input-group">
<input type="text" />
<button class="button" type="submit">...</button>
</div>
<div class="input-group">
<input class="input-s" type="text" />
<button class="button button-s" type="submit">...</button>
</div>
<div class="input-group">
<input class="input-xs" type="text" />
<button class="button button-xs" type="submit">...</button>
</div>
<div class="input-group">
<input class="input-xxs" type="text" />
<button class="button button-xxs" type="submit">...</button>
</div>