fix mobile click with preventDefault and pointer-events CSS

src/App.jsx

@@ -24,7 +24,8 @@ function TetrisPiece({ piece, isDark }) {
     setShowText(false);
   };
 
-  const handleClick = () => {
+  const handleClick = (e) => {
+    e.preventDefault();
     if (piece.link) {
       window.open(piece.link, '_blank', 'noopener,noreferrer');
     }

src/index.css

@@ -29,6 +29,11 @@
   -webkit-tap-highlight-color: transparent;
 }
 
+.tetris-board > div {
+  touch-action: manipulation;
+  -webkit-tap-highlight-color: transparent;
+}
+
 html, body {
   width: 100%;
   overflow-x: hidden;