section-xs
<div class="section-xs">
...
</div>
section-sm
<div class="section-sm">
...
</div>
section/section-md
<div class="section">
...
</div>
section-lg
<div class="section-lg">
...
</div>
section-xl
<div class="section-xl">
...
</div>
section-2xl
<div class="section-2xl">
...
</div>