diff --git a/layouts/partials/header-content.html b/layouts/partials/header-content.html
index a63823a..b65a77f 100644
--- a/layouts/partials/header-content.html
+++ b/layouts/partials/header-content.html
@@ -66,8 +66,7 @@
       </div>
       <div id="social" class="col span_6">
         <ul>
-          <li><a href="https://blog.kazu634.com/labs/">Labs</a></li>
-          <li><a href="https://blog.kazu634.com/quotes/">Quotes</a></li>
+          {{ partial "sections-definition.html" }}
           {{ with .Site.Params.twitter }}<li><a href="{{ . }}" target="_blank">Twitter</a></li>{{ end }}
           {{ with .Site.Params.facebook }}<li><a href="{{ . }}" target="_blank">Facebook</a></li>{{ end }}
           {{ with .Site.Params.github }}<li><a href="{{ . }}" target="_blank">GitHub</a></li>{{ end }}
diff --git a/layouts/partials/header.html b/layouts/partials/header.html
index 4b075b5..2f61c32 100644
--- a/layouts/partials/header.html
+++ b/layouts/partials/header.html
@@ -55,8 +55,7 @@
       </div>
       <div id="social" class="col span_6">
         <ul>
-          <li><a href="https://blog.kazu634.com/labs/">Labs</a></li>
-          <li><a href="https://blog.kazu634.com/quotes/">Quotes</a></li>
+          {{ partial "sections-definition.html" }}
           {{ with .Site.Params.twitter }}<li><a href="{{ . }}" target="_blank">Twitter</a></li>{{ end }}
           {{ with .Site.Params.facebook }}<li><a href="{{ . }}" target="_blank">Facebook</a></li>{{ end }}
           {{ with .Site.Params.github }}<li><a href="{{ . }}" target="_blank">GitHub</a></li>{{ end }}
diff --git a/layouts/partials/labs-header-content.html b/layouts/partials/labs-header-content.html
index 3934922..6b70f6b 100644
--- a/layouts/partials/labs-header-content.html
+++ b/layouts/partials/labs-header-content.html
@@ -82,8 +82,7 @@
       </div>
       <div id="social" class="col span_6">
         <ul>
-          <li><a href="https://blog.kazu634.com/labs/">Labs</a></li>
-          <li><a href="https://blog.kazu634.com/quotes/">Quotes</a></li>
+          {{ partial "sections-definition.html" }}
           {{ with .Site.Params.twitter }}<li><a href="{{ . }}" target="_blank">Twitter</a></li>{{ end }}
           {{ with .Site.Params.facebook }}<li><a href="{{ . }}" target="_blank">Facebook</a></li>{{ end }}
           {{ with .Site.Params.github }}<li><a href="{{ . }}" target="_blank">GitHub</a></li>{{ end }}
diff --git a/layouts/partials/sections-definition.html b/layouts/partials/sections-definition.html
new file mode 100644
index 0000000..c0fe1d6
--- /dev/null
+++ b/layouts/partials/sections-definition.html
@@ -0,0 +1,2 @@
+          <li><a href="https://blog.kazu634.com/labs/">Labs</a></li>
+          <li><a href="https://blog.kazu634.com/quotes/">Quotes</a></li>