diff --git a/src/lib/main.css b/src/lib/main.css
index 0daf981..33f8861 100644
--- a/src/lib/main.css
+++ b/src/lib/main.css
@@ -55,3 +55,13 @@ a {
 button:hover {
   cursor: pointer;
 }
+
+button {
+  -webkit-touch-callout: none;
+  -webkit-user-select: none;
+  -khtml-user-select: none;
+  -moz-user-select: none;
+  -ms-user-select: none;
+  user-select: none;
+  -webkit-tap-highlight-color: transparent;
+}