switched to NKJV, improved grading, improved styling

src/lib/components/GuessesTable.svelte

@@ -82,6 +82,12 @@
     animation: shine 5s infinite;
   }
 
+  .animate-shine.fade-in {
+    animation:
+      fadeIn 0.5s ease-out,
+      shine 5s infinite;
+  }
+
   @keyframes fadeIn {
     from {
       opacity: 0;