diff --git a/walkthrough/index.html b/walkthrough/index.html
index be89751..ab69e5b 100644
--- a/walkthrough/index.html
+++ b/walkthrough/index.html
@@ -1,25 +1,54 @@
 <!DOCTYPE html>
 <html>
   <head>
-    <title>Basic guides for 'Using GitHub'
-    </title>
+    <title>Basic guides for 'Using GitHub'</title>
   </head>
   <body>
-    <br>
-     <div style="position: relative; width: 100%; height: 0; padding-top: 56.2500%;
- padding-bottom: 48px; box-shadow: 0 2px 8px 0 rgba(63,69,81,0.16); margin-top: 1.6em; margin-bottom: 0.9em; overflow: hidden;
- border-radius: 8px; will-change: transform;">
-  <iframe loading="lazy" style="position: absolute; width: 100%; height: 100%; top: 0; left: 0; border: none; padding: 0;margin: 0;"
-    src="https:&#x2F;&#x2F;www.canva.com&#x2F;design&#x2F;DAE2Bb5xriI&#x2F;watch?embed" allowfullscreen="allowfullscreen" allow="fullscreen">
-  </iframe>
-</div>
-<a href="https:&#x2F;&#x2F;www.canva.com&#x2F;design&#x2F;DAE2Bb5xriI&#x2F;watch?utm_content=DAE2Bb5xriI&amp;utm_campaign=designshare&amp;utm_medium=embeds&amp;utm_source=link" target="_blank" rel="noopener">Walkthrough of Using GitHub _ Guide </a> by Instructor Saheli Basu
+    <br />
+    <div
+      style="
+        position: relative;
+        width: 100%;
+        height: 0;
+        padding-top: 56.25%;
+        padding-bottom: 48px;
+        box-shadow: 0 2px 8px 0 rgba(63, 69, 81, 0.16);
+        margin-top: 1.6em;
+        margin-bottom: 0.9em;
+        overflow: hidden;
+        border-radius: 8px;
+        will-change: transform;
+      "
+    >
+      <iframe
+        loading="lazy"
+        style="
+          position: absolute;
+          width: 100%;
+          height: 100%;
+          top: 0;
+          left: 0;
+          border: none;
+          padding: 0;
+          margin: 0;
+        "
+        src="https:&#x2F;&#x2F;www.canva.com&#x2F;design&#x2F;DAE2Bb5xriI&#x2F;watch?embed"
+        allowfullscreen="allowfullscreen"
+        allow="fullscreen"
+      >
+      </iframe>
+    </div>
+    <a
+      href="https:&#x2F;&#x2F;www.canva.com&#x2F;design&#x2F;DAE2Bb5xriI&#x2F;watch?utm_content=DAE2Bb5xriI&amp;utm_campaign=designshare&amp;utm_medium=embeds&amp;utm_source=link"
+      target="_blank"
+      rel="noopener"
+      >Walkthrough of Using GitHub _ Guide
+    </a>
+    by Instructor Saheli Basu
   </body>
-  <br><br>
+  <br /><br />
   <footer>
     Thank You
+    <h2>My edit</h2>
   </footer>
 </html>
-    
- 
-   
