diff --git a/404.html b/404.html
index fd9ff20..d19e5c3 100644
--- a/404.html
+++ b/404.html
@@ -6,9 +6,6 @@ permalink: /404.html
 redirect_from:
   - /norobots/
   - /assets/
-  - /tabs/
-  - /categories/
-  - /tags/
   - /posts/
 
 dynamic_title: true
@@ -16,5 +13,9 @@ dynamic_title: true
 
 <div class="lead">
   <p>Sorry, we've misplaced that URL or it's pointing to something that doesn't exist. </p>
-  <p><a href="{{ site.baseurl }}/">Head back Home</a> to try finding it again, or search for it on the <a href="{{ site.baseurl }}/tabs/archives">Archives page</a>.</p>
+  <p>
+    <a href="{{ '/' | relative_url }}">Head back Home</a>
+    to try finding it again, or search for it on the
+    <a href="{{ 'archives' | relative_url }}">Archives page</a>.
+  </p>
 </div>
diff --git a/_config.yml b/_config.yml
index cd56c91..117d01f 100644
--- a/_config.yml
+++ b/_config.yml
@@ -69,7 +69,6 @@ disqus:
 # Available options:
 #
 #     light  - Use the light color scheme
-#
 #     dark   - Use the dark color scheme
 #
 theme_mode:   # [light|dark]
@@ -89,6 +88,9 @@ toc: true
 
 paginate: 10
 
+
+# ------------ The following options are not recommended to be modified ------------------
+
 kramdown:
   syntax_highlighter: rouge
   syntax_highlighter_opts:   # Rouge Options › https://github.com/jneen/rouge#full-options
@@ -101,7 +103,7 @@ kramdown:
       start_line: 1
 
 # DO NOT change this unless you're a Pro user on Jekyll and Web development,
-# or you think you're smart enough to change other relevant URLs within this template.
+# Or you think you're smart enough to change other relevant URLs within this template.
 permalink: /posts/:title/
 
 collections:
@@ -119,55 +121,19 @@ defaults:
       layout: post
       comments: true    # Enable comments in posts.
       toc: true         # Display TOC column in posts.
-      breadcrumb:
-        -
-          label: Posts
-          url: /
   -
     scope:
       path: _drafts
     values:
       comments: false
-  -
-    scope:
-      path: index.html
-    values:
-      breadcrumb:
-        -
-          label: Posts
-  -
-    scope:
-      path: tags
-    values:
-      breadcrumb:
-        -
-          label: Home
-          url: /
-        -
-          label: Tags
-          url: /tabs/tags/
-  -
-    scope:
-      path: categories
-    values:
-      breadcrumb:
-        -
-          label: Home
-          url: /
-        -
-          label: Categories
-          url: /tabs/categories/
   -
     scope:
       path: ''
       type: tabs             # see `site.collections`
     values:
       layout: page
+      permalink: /:title/
       dynamic_title: true    # Hide title in mobile screens.
-      breadcrumb:
-        -
-          label: Home
-          url: /
 
 sass:
   style: compressed
diff --git a/_includes/topbar.html b/_includes/topbar.html
index 1cf82b0..034f984 100644
--- a/_includes/topbar.html
+++ b/_includes/topbar.html
@@ -5,21 +5,42 @@
 <div id="topbar-wrapper" class="row justify-content-center topbar-down">
   <div id="topbar" class="col-11 d-flex h-100 align-items-center justify-content-between">
     <span id="breadcrumb">
-      {% for item in page.breadcrumb %}
-        {% if item.url %}
+
+    {% assign paths = page.url | split: '/' %}
+
+    {% if paths.size == 0 %}
+      <!-- index page -->
+      <span>{{ 'Posts' }}</span>
+    {% else %}
+
+      {% for item in paths %}
+
+        {% if forloop.first %}
+          {% unless page.layout == 'post' %}
+          <span>
+            <a href="{{ '/' | relative_url }}">{{ 'Home' }}</a>
+          </span>
+          {% endunless %}
+
+        {% elsif forloop.last %}
+          <span>{{ page.title }}</span>
+
+        {% else %}
         <span>
-          <a href="{{ site.baseurl }}{{ item.url | remove: '.html'}}">
-            {{ item.label }}
+          {% assign url = item %}
+          {% if item == 'posts' and page.layout == 'post' %}
+            {% assign url = '/' %}
+          {% endif %}
+          <a href="{{ url | relative_url }}">
+            {{ item | capitalize }}
           </a>
         </span>
-        {% else %}
-          <span>{{ item.label }}</span>
+
         {% endif %}
+
       {% endfor %}
 
-      {% unless page.layout == "home" %}
-        <span>{{ page.title }}</span>
-      {% endunless %}
+    {% endif %}
 
     </span><!-- endof #breadcrumb -->