sketch-app-shell: add tailwind css to demo html
diff --git a/webui/src/web-components/demo/sketch-app-shell.demo.html b/webui/src/web-components/demo/sketch-app-shell.demo.html
index 18c5d2d..51c3564 100644
--- a/webui/src/web-components/demo/sketch-app-shell.demo.html
+++ b/webui/src/web-components/demo/sketch-app-shell.demo.html
@@ -5,6 +5,8 @@
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <title>sketch coding assistant</title>
     <link rel="stylesheet" href="/src/sketch-app-shell.css" />
+    <link rel="stylesheet" href="/src/tailwind.css" />
+
     <script type="module">
       const { worker } = await import("./mocks/browser");
       await worker.start();