<p class="ch-lh--body">...</p>
<!-- line-height: 1.5 -->

<p class="ch-lh--heading">...</p>
<!-- line-height: 1.25 -->

<p class="ch-lh--base">...</p>
<!-- line-height: 1 -->

<!-- Reponsive -->
<p class="[sl,sm,md,lg]:ch-lh--body">...</p>