Update index.html

index.html

@@ -19,6 +19,7 @@
       }
     </style>
     <script src="https://cdn.tailwindcss.com"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/iframe-resizer/4.3.1/iframeResizer.contentWindow.min.js"></script>
     <script type="module" src="./code.js"></script>
     <script type="module">
       import { hcl } from "https://cdn.skypack.dev/d3-color@3";