Import the framework.

404.html

@@ -0,0 +1,24 @@
+---
+# The 404 page
+# © 2017-2019 Cotes Chung
+# MIT License
+layout: page
+title: "404: Page not found"
+
+permalink: /404.html
+
+redirect_from:  # Same as site.blocklist
+- /norobots/
+- /assets/
+- /tabs/
+- /categories/
+- /tags/
+- /posts/
+
+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>
+</div>