body {
     font-family: Arial, sans-serif;
     margin: 0;
     padding: 0;
     text-align: center;
     background-color: whitesmoke;
     color: black;
     }
     .menu {
     background: black;
     padding: 25px;
     }
     .menu a {
     color: whitesmoke;
     text-decoration: none;
     margin: 50px;
     }
     .content {
     padding: 20px;
     }
     img {
     max-width: 100%;
     height: auto;
     }
     @media (min-width: 768px) {
     .content {
     max-width: 600px;
     margin: auto;
     }
     }