fix focus on login pazzle order tiles

ng-app/src/lib/Login.svelte

@@ -270,7 +270,7 @@
             <div
               role="button"
               tabindex="0"
-              class="w-full aspect-square emoji"
+              class="w-full aspect-square emoji focus:outline-none focus:bg-gray-300"
               on:click={() => select_order(emoji, row * 3 + i)}
               on:keypress={() => select_order(emoji, row * 3 + i)}
             >