Use two-column layout for example cards in welcome banner

Author: milanofthe

src/lib/components/WelcomeModal.svelte

@@ -345,7 +345,7 @@
 
 	.examples-grid {
 		display: grid;
-		grid-template-columns: repeat(3, 1fr);
+		grid-template-columns: repeat(2, 1fr);
 		grid-auto-rows: min-content;
 		align-items: start;
 		gap: 10px;
@@ -450,10 +450,6 @@
 		.banner-content {
 			padding-right: 90px;
 		}
-
-		.examples-grid {
-			grid-template-columns: repeat(2, 1fr);
-		}
 	}
 
 	@media (max-width: 500px) {