Moved to an easier dictionary and added invalid word guesses back

Also added a spinner

site/assets/styles/main.css

@@ -217,4 +217,26 @@ div.overlay-message {
 
 .hide {
     display: none !important;
+}
+
+.loader {
+    margin-top: 6rem;
+
+    width: 48px;
+    height: 48px;
+    border: 5px solid #FFF;
+    border-bottom-color: var(--color-no-letter-bg);
+    border-radius: 50%;
+    display: inline-block;
+    box-sizing: border-box;
+    animation: rotation 1s linear infinite;
+}
+
+@keyframes rotation {
+    0% {
+        transform: rotate(0deg);
+    }
+    100% {
+        transform: rotate(360deg);
+    }
 }