diff --git a/index.html b/index.html
index a07b699..dff1d87 100644
--- a/index.html
+++ b/index.html
@@ -106,6 +106,7 @@ <h2 id="contact-heading">Contact</h2>
               src="./images/logo/instagram-logo.png" alt="Instagram Logo" /></a>
         </li>
       </ul>
+    </section>
   </main>
 
   <footer>
@@ -113,13 +114,15 @@ <h2 id="contact-heading">Contact</h2>
       <li class="footer-sources-list-child">
         <div>
           Super Mario image from
-          <a href="https://www.teahub.io/viewwp/mmRbwo_super-mario-bross-wallpaper-hd/" target="_blank">teahub.io</a>
+          <a href="https://www.teahub.io/viewwp/mmRbwo_super-mario-bross-wallpaper-hd/" target="_blank"
+            rel="noopener">teahub.io</a>
         </div>
       </li>
       <li class="footer-sources-list-child">
         <div>
           Mario and Luigi image from
-          <a href="https://pixelz.cc/images/mario-and-luigi-uhd-4k-wallpaper/" target="_blank">pixelz.cc</a>
+          <a href="https://pixelz.cc/images/mario-and-luigi-uhd-4k-wallpaper/" target="_blank"
+            rel="noopener">pixelz.cc</a>
         </div>
       </li>
       <li class="footer-sources-list-child">
@@ -133,40 +136,42 @@ <h2 id="contact-heading">Contact</h2>
       <li class="footer-sources-list-child">
         <div>
           Super Mario logo vector from
-          <a href="https://seeklogo.com/vector-logo/247880/super-mario" target="_blank">seeklogo.com</a>
+          <a href="https://seeklogo.com/vector-logo/247880/super-mario" target="_blank" rel="noopener">seeklogo.com</a>
         </div>
       </li>
       <li class="footer-sources-list-child">
         <div>
           Icons made by
-          <a href="https://www.flaticon.com/authors/pixel-perfect" title="Pixel perfect" target="_blank">Pixel
+          <a href="https://www.flaticon.com/authors/pixel-perfect" title="Pixel perfect" target="_blank"
+            rel="noopener">Pixel
             perfect</a>
           from
-          <a href="https://www.flaticon.com/" title="Flaticon" target="_blank">flaticon.com</a>
+          <a href="https://www.flaticon.com/" title="Flaticon" target="_blank" rel="noopener">flaticon.com</a>
         </div>
       </li>
       <li class="footer-sources-list-child">
         <div>
           Super Mario characters image from
           <a href="https://www.wallpaperflare.com/super-mario-wallpaper-mario-bros-luigi-yoshi-princess-peach-wallpaper-pczgm"
-            target="_blank">wallpaperflare.com</a>
+            target="_blank" rel="noopener">wallpaperflare.com</a>
         </div>
       </li>
       <li class="footer-sources-list-child">
         <div>
           Mario Auditore image by
-          <a href="https://assassinscreed.fandom.com/wiki/User:Freeze129" target="_blank">Freeze129</a>
+          <a href="https://assassinscreed.fandom.com/wiki/User:Freeze129" target="_blank" rel="noopener">Freeze129</a>
           from
-          <a href="https://assassinscreed.fandom.com/wiki/Mario_Auditore" target="_blank">assassinscreed.fandom.com</a>
+          <a href="https://assassinscreed.fandom.com/wiki/Mario_Auditore" target="_blank"
+            rel="noopener">assassinscreed.fandom.com</a>
         </div>
       </li>
       <li class="footer-sources-list-child">
         <div>
           Mario Mushrooms Pattern made by
-          <a href="https://www.deviantart.com/lucasavancini" target="_blank">lucasavancini</a>
+          <a href="https://www.deviantart.com/lucasavancini" target="_blank" rel="noopener">lucasavancini</a>
           from
-          <a href="https://www.deviantart.com/lucasavancini/art/Mario-Mushrooms-Pattern-158362772"
-            target="_blank">deviantart.com</a>
+          <a href="https://www.deviantart.com/lucasavancini/art/Mario-Mushrooms-Pattern-158362772" target="_blank"
+            rel="noopener">deviantart.com</a>
         </div>
       </li>
     </ul>