nav and grid */
        @media screen and (max-width: 767px) {
            .sidenav {
                height: auto;
                padding: 15px;
            }
            .row.content {height: auto;}
        }
    </style>
</head>
<body>

<div class="container-fluid">
    <div class="row content">
        <div class="col-sm-3 sidenav">
            <h4>DRPP - Blockchain Solution
            </h4>
            <ul class="nav nav-pills nav-stacked">
                <li ><a href="index.html">Home</a></li>
    