Remove header nav from React + TypeScript pages

Author: RoyalIcing

lib/components_guide_web/templates/react_typescript/_nav.html.heex

@@ -1,5 +1,5 @@
 <nav class="">
-  <p class="px-2 pb-6 text-xl italic"><%= "React & TypeScript Guide" %></p>
+  <p class="px-2 pb-6 mb-6 text-5xl text-blue-200 border-b-4 border-blue-200"><%= "React & TypeScript Guide" %></p>
   <ul class="text-xl" data-links="block p-2 current-page-bold">
     <li><%= link(@conn, "Fundamentals", to: "/react+typescript") %></li>
     <li><%= link(@conn, "Testing", to: "/react+typescript/testing") %></li>

lib/components_guide_web/templates/react_typescript/index.html.eex

@@ -1,7 +1,3 @@
-<header class="<%= ComponentsGuideWeb.TopicsView.class_for_topic(:react_typescript) %>">
-  <%= render view_module(@conn), "_headline.html" %>
-</header>
-
 <navigable-article class="flex flex-col">
   <div class="mx-auto grid-flow-col md:grid md:grid-cols-[20rem_minmax(0,var(--max-width))] xl:grid-cols-[20rem_minmax(0,var(--max-width))_18rem] gap-8" style="--max-width: 46em">
     <div class="md:sticky top-0 md:h-screen pl-4 pt-16 text-white">