diff --git a/index.php b/index.php
index f62f7ab..d14a5c6 100755
--- a/index.php
+++ b/index.php
@@ -22,6 +22,7 @@ var_dump($res);
 	<script type="text/javascript">
 		draw_roulette(3, 200, 200, 200, ["arthur", "jimmy", "Jamel"]);
 	</script>
+	<button	onclick="document.getElementById('roulette').setAttribute('transform', 'rotate(90)')" style="transition: 3s ease-out;">Tourner</button>
 </body>
 </html>