additional style tweaking

client/src/App.css

@@ -132,6 +132,11 @@
 
 .new-game__dropdown-button {
   text-align: center;
+  padding: 4px;
+  background-color: #555;
+  color: #fff;
+  cursor: pointer;
+  font-weight: 600;
 }
 
 .new-game__dropdown-items {
@@ -145,6 +150,7 @@
 .new-game__dropdown-items .new-game__dropdown-option {
   padding: 12px 16px;
   display: block;
+  cursor: pointer;
 }
 
 .new-game__dropdown-items .new-game__dropdown-option:hover {

client/src/components/screens/PreGame/PreGame.jsx

@@ -10,7 +10,7 @@ const NewGame = ({ onCreateGame, cannotCreateGame, timer, setTimer }) => {
   return (
     <div className="new-game">
       <div className="new-game__dropdown">
-        <div className="btn new-game__dropdown-button">
+        <div className="new-game__dropdown-button">
           Round Timer: {ms(timer * 1000)}
         </div>
         <div className="new-game__dropdown-items">