ry for full-width elements.
  </p>

  <hr class="my-4">

  <h2 class="mt-4">Two columns with two nested columns</h2>
  <p>Per the documentation, nesting is easyâ€”just put a row of columns within an existing column. This gives you two columns <strong>starting at desktops and scaling to large desktops</strong>, with another two (equal widths) within the larger column.</p>
  <p>At mobile device sizes, tablets and down, these columns and their nested columns will stack.</p>
  <div class="row mb-3">
    <d