Add 200×40 version of my site button

src/_includes/main/my-button.njk

@@ -1,5 +1,15 @@
-<p>You can link to my website with the following button. I strongly recommend you to upload my site button to your own website instead of hotlinking the button.</p>
+<p>You can link to my website using my site button. I strongly recommend you to upload my site button to your own website instead of hotlinking the button.</p>
 
-<img src="/assets/leilukin/Leilukins-Hub-button.png" alt="Leilukin's Hub website button" width="88" height="31" loading="lazy">
+<div class="web-graphics my-btn">
+    <img src="/assets/leilukin/Leilukins-Hub-button-88x31.png" alt="Leilukin's Hub website button with 88×31 pixel size" width="88" height="31" loading="lazy">
+    <img src="/assets/leilukin/Leilukins-Hub-button-200x40.png" alt="Leilukin's Hub website button with 200×40 pixel size" width="200" height="40" loading="lazy">
+</div>
 
-<p>(I created this site button myself with Adobe Photoshop CS5)</p>
+<p>(I created my site button with Adobe Photoshop CS5)</p>
+
+{%- css %}
+.my-btn {
+    align-items: center;
+    margin-top: 1em;
+}
+{% endcss %}