           border-bottom-left-radius: 35px;
            border-bottom-right-radius: 35px;
            font-family: monospace;
        }
    </style>
</head>
<body>
    <nav class="navbar navbar-expand-lg navbar-dark">
        <a class="navbar-brand" href="#">KEITH-MD</a>
        <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNav" aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
            <span class="navbar-toggler-icon"></span>
     