diff --git a/{{ cookiecutter.format }}/www/index.html b/{{ cookiecutter.format }}/www/index.html
index 0a09c9b..a0b710d 100644
--- a/{{ cookiecutter.format }}/www/index.html	
+++ b/{{ cookiecutter.format }}/www/index.html	
@@ -14,32 +14,16 @@
         <meta property="og:type" content="website">
         <meta property="og:image" content="/static/social.png">
 
-        <!-- PyScript -->
+        <!-- Python Implementation -->
 
-        <script type="module">
-            // Hide the splash screen when the page is ready.
-            import { hooks } from "https://pyscript.net/releases/2024.11.1/core.js";
-            hooks.main.onReady.add(() => {
-                document.getElementById("briefcase-splash").classList.add("hidden");
-            });
-        </script>
+        <!--@@ head-python:start @@-->
+        <!--@@ head-python:end @@-->
 
-        <link rel="stylesheet" href="https://pyscript.net/releases/2024.11.1/core.css">
-        <script type="module" src="https://pyscript.net/releases/2024.11.1/core.js"></script>
+        <!-- Toolkit Head Insert (any valid <head> content)-->
 
-        <!-- App Style -->
+        <!--@@ head:start @@-->
+        <!--@@ head:end @@-->
 
-{% if cookiecutter.style_framework == "Bootstrap v4.6" %}
-        <link rel="stylesheet"
-              href="https://cdn.jsdelivr.net/npm/bootstrap@4.6.2/dist/css/bootstrap.min.css"
-              integrity="sha384-xOolHFLEh07PJGoPkLv1IbcEPTNtaed2xpHsD9ESMhqIYd0nLMwNLD69Npy4HI+N"
-              crossorigin="anonymous">
-{% elif cookiecutter.style_framework == "Shoelace v2.3" %}
-        <link rel="stylesheet"
-              href="https://cdn.jsdelivr.net/npm/@shoelace-style/shoelace@2.3.0/dist/themes/light.css" />
-        <script type="module"
-                src="https://cdn.jsdelivr.net/npm/@shoelace-style/shoelace@2.3.0/dist/shoelace.js"></script>
-{% endif %}
         <link rel="stylesheet" href="/static/css/briefcase.css">
     </head>
     <body id="app-placeholder">
@@ -47,19 +31,17 @@
             <img src="static/logo-32.png" alt="Splash screen logo">
             <p>Loading...</p>
         </div>
-{% if cookiecutter.style_framework == "Bootstrap v4.6" %}
-        <script src="https://cdn.jsdelivr.net/npm/jquery@3.5.1/dist/jquery.slim.min.js"
-                integrity="sha384-DfXdz2htPH0lsSSs5nCTpuj/zy4C+OGpamoFVy38MVBnE+IbbVYUew+OrCXaRkfj"
-                crossorigin="anonymous"></script>
-        <script src="https://cdn.jsdelivr.net/npm/bootstrap@4.6.2/dist/js/bootstrap.bundle.min.js"
-                integrity="sha384-Fy6S3B9q64WdZWQUiU+q4/2Lc9npb8tCaSX9FK7E8HnRr0Jz8D6OP9dO5Vg3Q9ct"
-                crossorigin="anonymous"></script>
-{% endif %}
-        <script type="py" async="false" config="pyscript.toml">
-            import runpy
-            result = runpy.run_module(
-                "{{ cookiecutter.module_name }}", run_name="__main__", alter_sys=True
-            )
-        </script>
+
+        <!--@@ body-start:start @@-->
+        <!--@@ body-start:end @@-->
+
+        <!--@@ body-python:start @@-->
+        <!--@@ body-python:end @@-->
+
+        <!-- Toolkit Body Insert (any valid <script> tags)-->
+
+        <!--@@ body-end:start @@-->
+        <!--@@ body-end:end @@-->
+
     </body>
 </html>
diff --git a/{{ cookiecutter.format }}/www/static/css/briefcase.css b/{{ cookiecutter.format }}/www/static/css/briefcase.css
index 0438a82..05e825f 100644
--- a/{{ cookiecutter.format }}/www/static/css/briefcase.css	
+++ b/{{ cookiecutter.format }}/www/static/css/briefcase.css	
@@ -38,8 +38,10 @@ div#briefcase-splash img {
     }
 }
 
-/*******************************************************************
- * WARNING: Do not remove or modify this comment block, or add any
- * content below this block. Briefcase will add content here during
- * the build step.
- ******************* Wheel contributed styles **********************/
+/************************* Toolkit styles *************************/
+
+/* WARNING: Do not modify content between the @@ css:start @@ and
+   @@ css:end @@ markers. */
+
+/*@@ css:start @@*/
+/*@@ css:end @@*/
