chore(post): restore margin at the bottom of TOC

_includes/toc.html

@@ -6,7 +6,7 @@
 {% endif %}
 
 {% if enable_toc %}
-  <section id="toc-wrapper" class="ps-0 pe-4 mb-5">
+  <section id="toc-wrapper" class="ps-0 pe-4">
     <h2 class="panel-heading ps-3 pt-2 mb-2">{{- site.data.locales[include.lang].panel.toc -}}</h2>
     <nav id="toc"></nav>
   </section>

_layouts/default.html

@@ -38,7 +38,7 @@ layout: compress
           </main>
 
           <!-- panel -->
-          <aside aria-label="Panel" id="panel-wrapper" class="col-xl-3 ps-2 text-muted">
+          <aside aria-label="Panel" id="panel-wrapper" class="col-xl-3 ps-2 mb-5 text-muted">
             <div class="access">
               {% include_cached update-list.html lang=lang %}
               {% include_cached trending-tags.html lang=lang %}