Switch to using several h1's on the landing page

This makes the styling of the headers more consistent with the overall standard styling

app/views/_tailwind/home/_how_is_this_free.html.erb

@@ -1,7 +1,6 @@
 <%# TODO: The words here are a start and are good in spirit but not totally accurate so need updating %>
 <section class="pt-12 pb-16">
-  <%# TODO: Non-standard style %>
-  <%= render Tailwind::Heading.new(tag: :h2, size: "4xl", extra_classes: "pb-8").with_content("How is this free?") %>
+  <%= render Tailwind::Heading.new(tag: :h1, extra_classes: "pb-8").with_content("How is this free?") %>
   <div class="flex flex-col gap-8 lg:flex-row">
     <div>
       <p class="text-2xl text-navy">

app/views/_tailwind/home/_how_it_works.html.erb

@@ -1,6 +1,5 @@
 <section class="pb-8 text-navy">
-  <%# TODO: Using non-standard style %>
-  <%= render Tailwind::Heading.new(tag: :h2, size: "4xl", extra_classes: "mt-20").with_content("How it works") %>
+  <%= render Tailwind::Heading.new(tag: :h1, extra_classes: "mt-20").with_content("How it works") %>
   <p class="mt-6 text-2xl">
     Planning Alerts collects information from as many local councils and state planning authorities across Australia as possible, so that you can&hellip;
   </p>
@@ -10,7 +9,7 @@
         <div class="before:[content:counter(section)] flex items-center relative -left-10 justify-center bg-lavender w-20 h-20 rounded-full before:text-white before:font-semibold before:text-3xl">
         </div>
       </div>
-      <%= render Tailwind::Heading.new(tag: :h3, font: "sans", weight: "semibold", extra_classes: "pb-4").with_content("Search") %>
+      <%= render Tailwind::Heading.new(tag: :h2, size: "2xl", font: "sans", weight: "semibold", extra_classes: "pb-4").with_content("Search") %>
       <%= image_tag "tailwind/illustration/search.svg", size: "200x144", class: "mx-auto mb-5", alt: "" %>
       Search for applications in an area you're interested in
     </li>
@@ -19,7 +18,7 @@
         <div class="before:[content:counter(section)] flex items-center relative -left-10 justify-center bg-lavender w-20 h-20 rounded-full before:text-white before:font-semibold before:text-3xl">
         </div>
       </div>
-      <%= render Tailwind::Heading.new(tag: :h3, font: "sans", weight: "semibold", extra_classes: "pb-4").with_content("Get notified!") %>
+      <%= render Tailwind::Heading.new(tag: :h2, size: "2xl", font: "sans", weight: "semibold", extra_classes: "pb-4").with_content("Get notified!") %>
       <%= image_tag "tailwind/illustration/get-notified.svg", size: "200x131", class: "mx-auto mb-8", alt: "" %>
       Sign up to receive email notifications about future developments in your search area.
     </li>
@@ -28,7 +27,7 @@
         <div class="before:[content:counter(section)] flex items-center relative -left-10 justify-center bg-lavender w-20 h-20 rounded-full before:text-white before:font-semibold before:text-3xl">
         </div>
       </div>
-      <%= render Tailwind::Heading.new(tag: :h3, font: "sans", weight: "semibold", extra_classes: "pb-4").with_content("Comment") %>
+      <%= render Tailwind::Heading.new(tag: :h2, size: "2xl", font: "sans", weight: "semibold", extra_classes: "pb-4").with_content("Comment") %>
       <%= image_tag "tailwind/illustration/comment.svg", size: "200x165", class: "mx-auto", alt: "" %>
       Look through the applications that interest you and comment on them. Comments get sent directly
       to council and are posted publicly on Planning Alerts.

app/views/_tailwind/home/_stats.html.erb

@@ -1,7 +1,6 @@
 <% cache "stats", expires_in: 1.hour do %>
   <section class="pt-12 text-xl text-navy">
-    <%# TODO: Non-standard style %>
-    <%= render Tailwind::Heading.new(tag: :h2, size: "4xl", extra_classes: "mb-12").with_content("This week at Planning Alerts") %>
+    <%= render Tailwind::Heading.new(tag: :h1, extra_classes: "mb-12").with_content("This week at Planning Alerts") %>
     <ul class="grid gap-12 text-center sm:grid-cols-2 lg:grid-cols-4">
       <li>
         <%= link_to applications_path, class: "text-fuchsia focus:bg-sun-yellow block" do %>

app/views/_tailwind/home/_trending.html.erb

@@ -1,7 +1,5 @@
 <section class="pb-12">
-  <%# TODO: Non-standard style %>
-  <%# TODO: Should this actually be an h1? %>
-  <%= render Tailwind::Heading.new(tag: :h2, size: "4xl", extra_classes: "mt-20").with_content("Most commented applications") %>
+  <%= render Tailwind::Heading.new(tag: :h1, extra_classes: "mt-20").with_content("Most commented applications") %>
   <p class="mt-4 text-2xl text-navy">
     Some planning applications attract considerably more community interest than others.
     We bring you the trending applications so you can see what people find most popular or contentious.