Remove legacy CSS and enable design system by default

components/iframe_forms/iframe-feedback-form.html

@@ -5,13 +5,11 @@
     <title>bitvid General Feedback Form</title>
     <!-- Link to your main stylesheet -->
 
-    <link rel="stylesheet" href="../../css/style.css?v=2024.10.29" />
     <link rel="stylesheet" href="../../css/tailwind.generated.css" />
-    <link rel="stylesheet" href="./iframe-forms.css" />
     <!-- Load nostr‑tools v2.10.4 -->
     <script src="https://cdn.jsdelivr.net/npm/[email protected]/lib/nostr.bundle.min.js"></script>
   </head>
-  <body data-ds="legacy">
+  <body class="iframe-form" data-ds="new">
     <div class="container">
       <div class="form-container">
         <p>