Improve accessibility across layouts, components, and forms (#2799)

shared/ui/Toast.astro

@@ -41,9 +41,9 @@ const person = (people as Person[])[personId]
         <Fragment>
           🍪&nbsp;Our site uses cookies. By continuing to use our site, you agree to our Cookie Policy.
           <div class="mt-2 pt-2 border-top">
-            <a href="#" class="btn btn-primary btn-sm">
+            <button type="button" class="btn btn-primary btn-sm" data-bs-dismiss="toast">
               I understand
-            </a>
+            </button>
           </div>
         </Fragment>
       ) : (