fix stylesheet

style.css

@@ -1,11 +1,13 @@
 .grid-container {
 	font-family: Arial, sans-serif;
 	font-size: 20px;
-	display: grid;
-	grid-template-columns: auto auto auto;
 }
 
 .grid-item {
-	padding: 0px;
+	height: 3ch;
+	padding: 10px;
+	background: green;
+	border-radius: 10px;
+	border: 2px solid white;
 	text-align: left;
 }