Funny animation

src/components/WordlistSelection.vue

@@ -74,6 +74,8 @@ function startGame() {
   cursor: pointer;
   width: 200px;
   text-align: center;
+  transition: box-shadow 0.2s ease-in-out;
+  background-color: white;
 }
 .selected {
   background-color: #afa;