diff --git a/web-optimle/www/src/App.css b/web-optimle/www/src/App.css
index e5ead70..81681cd 100644
--- a/web-optimle/www/src/App.css
+++ b/web-optimle/www/src/App.css
@@ -76,6 +76,7 @@ body {
 .Game,
 h1 {
   user-select: none;
+  touch-action: manipulation;
 }
 
 .Game {