[IMP][CSS] Rescale heading fonts

extensions/odoo_theme/layout_templates/footer.html

@@ -1,6 +1,6 @@
 <div class="o_get_help container-fluid d-lg-flex">
     <div class="col-12 col-lg-10">
-        <h5><i class="i-o-help me-2"></i>{{ _("Get Help") }}</h5>
+        <h4><i class="i-o-help me-2"></i>{{ _("Get Help") }}</h4>
         <div>
             <a href="https://odoo.com/help" target="_blank" class="btn btn-outline-secondary mb-2">{{ _("Contact Support") }}</a>
             <a href="https://www.odoo.com/forum/help-1" target="_blank" class="btn btn-outline-secondary mb-2">{{ _("Ask the Odoo Community") }}</a>

extensions/odoo_theme/layout_templates/page_toc.html

@@ -1,4 +1,4 @@
 <div class="o_page_toc_nav mt-1">
-    <h3>{{ _("On this page") }}</h3>
+    <h5>{{ _("On this page") }}</h5>
     {{ toc }} {# this is the page TOC (or local toc) #}
 </div>