anchor.diff:      </div>
       <div class="column image">
         <figure class="content">
  -        <%= image_tag 'history/horse-guards-vintage.jpg', alt: 'Introduction to history of government' %>
  +        <span class="aspect-ratio-3:2 govuk-!-margin-bottom-3">
  +          <%= image_tag "history/horse-guards-vintage.jpg", alt: "An old painting of the Horse Guards building.", loading: "lazy" %>
  +        </span>
           <figcaption>Thomas Shotter Boys &ndash; A View of the Horse Guards from Whitehall. Government Art Collection.</figcaption>
         </figure>
       </div>
  
positive.code:     <hr class="keyline">
      <div class="column">
        <div class="content">
          <%= image_tag 'how-gov-works/Churchill_01.jpg', alt: 'History of government' %>
        </div>
      </div>
      <div class="column">
  
negative.code:     </div>
      <div class="column">
        <div class="content">
          <span class="aspect-ratio-3:2">
            <%= image_tag 'history/government-buildings.jpg', alt: "", loading: "lazy" %>
          <span>
        </div>
      </div>
    </div>
  