Add section break

app/views/start/index.html.erb

@@ -16,6 +16,8 @@
       href: start_path,
     ) %>
 
+    <hr class="govuk-section-break govuk-section-break--visible govuk-section-break--m">
+
     <h2 class="govuk-heading-m">Before you start</h2>
     <p class="govuk-body">Use your account details to sign in.</p>
     <p class="govuk-body">If you need to set up a new account, speak to your organisation’s CORE data coordinator. If you don’t know who that is, <%= govuk_link_to("contact the helpdesk", GlobalConstants::HELPDESK_URL) %>.</p>