style(css): change out CSS classes according to stylesheet update

www/templates/root.html

@@ -18,6 +18,7 @@
     
 		<script src="/static/htmx.min.js"></script>
 		<script id="main_banner_script" src="/static/banner.js"></script>
+		<script src="/static/toc.js"></script>
 
 		{% if page.base %}
 			<base href="{{ page.base }}">
@@ -90,6 +91,9 @@
 	        </menu>
 	    </header>
 
+		<nav id="toc" class="table_of_contents">
+		</nav>
+
         <main id="main_content_wrapper">
         	{% block main_content %}
 				<h3>This here should have been replaced by content.