diff --git a/css/style.css b/css/style.css
index 962b184..22aec4e 100644
--- a/css/style.css
+++ b/css/style.css
@@ -1,7 +1,8 @@
 /* Mobile-first styles */
 html,body,#stage{height:100%;margin:0;padding:0}
+html,body{-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}
 body{font-family:system-ui,-apple-system,Segoe UI,Roboto,'Helvetica Neue',Arial;background:#111;color:#fff}
-#stage{position:relative;overflow:hidden;touch-action:none}
+#stage{position:relative;overflow:hidden;touch-action:none;-webkit-user-select:none;user-select:none}
 #overlay{position:absolute;left:12px;right:12px;top:18px;text-align:center}
 #overlay h1{margin:0;font-size:20px;letter-spacing:0.5px}
 .hint{opacity:.7;font-size:13px}