diff --git a/index.html b/index.html
index a836807..eb304a0 100644
--- a/index.html
+++ b/index.html
@@ -498,6 +498,10 @@ <h2 class="mb-0">
 <p><a href="https://www.youtube.com/playlist?list=PLOpdawbjz2cu7Ikp1VG2xe16DadQyO6UI" target=_blank">Bootstrap Video Tutorial</a></p>  
 </li>
 <li class="list-group-item">
+<a href="https://codepen.io/pen/tour/welcome/start" target="_blank">CodePen</a>
+<p>A HTML, CSS, JS sandpit to test web development ideas.</p>
+</li>
+<li class="list-group-item">
 <a href="https://www.draw.io/" target="_blank">Draw IO</a>
 <p>A tool to draw sitemaps and wireframes in the planning phase of web design.</p>
 </li>