diff --git a/pyscriptjs/examples/repl2.html b/pyscriptjs/examples/repl2.html
index e43cc349..53099a20 100644
--- a/pyscriptjs/examples/repl2.html
+++ b/pyscriptjs/examples/repl2.html
@@ -20,9 +20,9 @@
   </py-env>
 
   <body>
-      <py-box>
-        <div class="w-2/3"><py-repl id="my-repl" auto-generate="true" target="output"> </py-repl></div>
-        <div id="output" class="w-1/3"></div>
+      <py-box widths="2/3;1/3">
+        <py-repl id="my-repl" auto-generate="true" target="output"> </py-repl>
+        <div id="output"></div>
       </py-box>
   </body>
 </html>
