y-100 pl-1">
  <div class="b-thin">pl-1</div>
</div>
<div class="mb-1 bg-gray-100 pl-2">
  <div class="b-thin">pl-2</div>
</div>
<div class="mb-1 bg-gray-100 pl-3">
  <div class="b-thin">pl-3</div>
</div>
<div class="mb-1 bg-gray-100 pl-4">
  <div class="b-thin">pl-4</div>
</div>
<div class="mb-1 bg-gray-100 pl-5">
  <div class="b-thin">pl-5</div>
</div>
<div class="mb-1 bg-gray-100 pl-6">
  <div class="b-thin">pl-6</div>
</div>
</div>
<h2 id="spacing-extras" tabindex="-1">Spacing extras</h2>
<h3 id="margin