diff --git a/_showcase/default/image_text_1.md b/_showcase/default/image_text_1.md
deleted file mode 100644
index 12c76a8..0000000
--- a/_showcase/default/image_text_1.md
+++ /dev/null
@@ -1,21 +0,0 @@
----
-show: true
-width: 4
-date: 2020-01-12 00:01:00 +0800
----
-<div>
-  <img data-src="{{ 'assets/images/covers/cover1.jpg' | relative_url }}" class="lazy w-100 rounded-xl" src="{{ '/assets/images/empty_300x200.png' | relative_url }}">
-
-  <div class="card-img-overlay" style="overflow: scroll; background: rgb(255,255,255,0.8)">
-    <h5 class="card-title">Image Lazyload</h5>
-    <p class="card-text">
-      It is highly recommended to use lazyload for images to improve page loading speed, especially for pages with many images.
-      Example code snippet:
-    </p>
-    <p class="card-text">
-      {% raw %}
-      <code>&lt;img data-src=&quot;[Image URL]&quot; class=&quot;lazy w-100 rounded-xl&quot; src=&quot;{{ '/assets/images/empty_300x200.png' | relative_url }}&quot;&gt;</code>
-      {% endraw %}
-    </p>
-  </div>
-</div>