Fix css mime type
diff --git a/webui/src/sketch-app-shell.html b/webui/src/sketch-app-shell.html
index c12ce8c..702b588 100644
--- a/webui/src/sketch-app-shell.html
+++ b/webui/src/sketch-app-shell.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="static/sketch-app-shell.css" />
<script src="static/sketch-app-shell.js" async type="module"></script>
</head>
<body>