Added main.css and white-link class

public/index.html

@@ -3,6 +3,7 @@
 
 <head>
   <meta charset="utf-8" />
+  <link rel="stylesheet" href="main.css">
   <link rel="icon"
     href="https://cdn.jsdelivr.net/npm/@fortawesome/fontawesome-free@5.14/svgs/solid/book.svg" />
   <meta name="viewport" content="width=device-width, initial-scale=1" />