       background-color: white;
                margin-top: 5px;
                border: 1px solid black;
                float: right;
            }

            nav {
                margin-top: 10px;
                margin-left: auto;
                margin-right: auto;
                text-align: center;
            }
        </style>
    </head>
    <body>
        <nav>
            <a href='/'>Home </a>
            <a href='/options'>Options </a>
        </nav>
        <div class="container">
         