bp2-lh-5">Responsive sizes</h2>
                </div>
                <div class="mb-3">
                    <p class="Text size4 lh-5 bp1-lh-6">You can toggle sizes as the viewport
                      width changes, using the four breakpoint class prefixes
                      <code class="Code">bp1-</code>, <code class="Code">bp2-</code>,
                      <code class="Code">bp3-</code> and <code class="Code">bp4-</code>. In
                      the example below, the Heading scales from
        