anchor.diff:          </div>
   
           <div class="govuk-grid-column-one-third">
  -          <a href="/travel-abroad" aria-hidden="true" tabindex="-1">
  +          <a href="/travel-abroad"
  +             aria-hidden="true"
  +             tabindex="-1"
  +             data-track-category="homepageClicked"
  +             data-track-action="promoImageLink"
  +             data-track-label="/travel-abroad"
  +             data-track-value="1"
  +             data-track-dimension-index="29"
  +             data-track-dimension="homepage/travel-abroad-step-by-step.png">
               <%= image_tag "homepage/travel-abroad-step-by-step.png", {
                 alt: "",
                 class: "home-promo__image",
  
positive.code:         </div>
  
          <div class="govuk-grid-column-one-third">
            <a href="https://www.nhs.uk/conditions/coronavirus-covid-19/coronavirus-vaccination/" aria-hidden="true" tabindex="-1">
              <%= image_tag "homepage/covid-19-vaccine-promo.png", {
                alt: "",
                class: "home-promo__image",
  
negative.code:     </section>
  
      <section>
        <div class="govuk-grid-row" data-module="gem-track-click">
          <div class="govuk-grid-column-one-third">
            <a href="/government/topical-events/afghanistan-uk-government-response"
               aria-hidden="true"
               tabindex="-1"
               data-track-category="homepageClicked"
               data-track-action="promoImageLink"
               data-track-label="/government/topical-events/afghanistan-uk-government-response"
               data-track-value="1"
               data-track-dimension-index="29"
               data-track-dimension="homepage/afghan-image-promo.jpg">
              <%= image_tag "homepage/afghan-image-promo.jpg", {
                alt: "",
                class: "home-promo__image",
  