diff --git a/app/styles/app.css b/app/styles/app.css
index e88c567..fd42e3a 100644
--- a/app/styles/app.css
+++ b/app/styles/app.css
@@ -5,6 +5,11 @@ body {
   height: 100%;
   overscroll-behavior: none; /* Prevent pull-to-refresh on mobile */
   -webkit-text-size-adjust: 100%;
+  -webkit-tap-highlight-color: transparent;
+}
+
+button {
+  -webkit-tap-highlight-color: transparent;
 }
 
 body {