Add sign up button

app/views/pages/thank_you.html.erb

@@ -16,7 +16,7 @@
       </div>
     </div>
     <div class="block md:hidden">
-      <%= image_tag "grandchild.jpg" %>
+      <%= image_tag "grandchild.jpg", alt: "Grandfather playing with his grandchild" %>
     </div>
   </div>
 </div>

app/views/users/new.html.erb

@@ -13,11 +13,12 @@
         <p class="text-md text-lg l:text-xl text-white xl:w-5/6">
           “A great guide and confidence builder knowing we were doing a lot right and then fantastic guidance in what we can do and apply to further develop our child."<br>- Ali's mum
         </p>
+        <%= link_to "Sign up", "#sign-up-form", class: "btn bg-purple-300 float-end md:w-1/3 mt-4" %>
       </div>
     </div>
   </div>
   <div class="block md:hidden">
-    <%= image_tag "children-playing.jpg" %>
+    <%= image_tag "children-playing.jpg", alt: "Father smiling at his young child" %>
   </div>
 
   <div class="px-3 py-6 md:py-24 md:px-28 bg-red-100 items-center">

test/system/users_test.rb

@@ -19,7 +19,9 @@ class UsersTest < ApplicationSystemTestCase
     message = "Welcome to our programme of weekly texts with fun activities! Here's a video to get you started: http://localhost:3000/m/123"
     stub_successful_twilio_call(message, User.new(phone_number: "+447444930200"))
 
-    click_on "Sign up"
+    within("#sign-up-form") do
+      click_on "Sign up"
+    end
 
     assert_text "Thank you for signing up!"
 
@@ -40,7 +42,9 @@ class UsersTest < ApplicationSystemTestCase
   test "form shows errors" do
     visit new_user_path
 
-    click_on "Sign up"
+    within("#sign-up-form") do
+      click_on "Sign up"
+    end
 
     assert_field_has_errors("First name")
     assert_field_has_errors("Last name")