diff --git a/docs/examples/browser-devenv-v3/files/index.html b/docs/examples/browser-devenv-v3/files/index.html
index aff7522..3e62d13 100644
--- a/docs/examples/browser-devenv-v3/files/index.html
+++ b/docs/examples/browser-devenv-v3/files/index.html
@@ -1,6 +1,7 @@
 <!DOCTYPE html>
 <html lang="en">
   <title>Agregore self-hosted devenv V3</title>
+  <style>html {font-family: system-ui;}</style>
   <h1>Agregore self-hosted devenv V3</h1>
   <button onclick="window.showEditor()">Show Editor</button>
   <script src="lib.js"></script>
