webui: Fix demo css
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 8c4458b..18c5d2d 100644
--- a/webui/src/web-components/demo/sketch-app-shell.demo.html
+++ b/webui/src/web-components/demo/sketch-app-shell.demo.html
@@ -4,7 +4,7 @@
     <meta charset="UTF-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <title>sketch coding assistant</title>
-    <link rel="stylesheet" href="sketch-app-shell.css" />
+    <link rel="stylesheet" href="/src/sketch-app-shell.css" />
     <script type="module">
       const { worker } = await import("./mocks/browser");
       await worker.start();