admin_topnav.php

    <!-- Navigation -->
    <nav class="navbar navbar-default 	 navbar-fixed-top" role="navigation">
        <div class="container">
            <!-- Brand and toggle get grouped for better mobile display -->
            <div class="navbar-header">
                <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1">
                    <span class="sr-only">Toggle navigation</span>
                    <span class="icon-bar"></span>
                    <span class="icon-bar"></span>
                    <span class="icon-bar"></span>
                </button>
                <a class="navbar-brand" href="index.php"><i class="fa fa-heartbeat fa-lg"></i> Blood Bank</a>
            </div>
            <!-- Collect the nav links, forms, and other content for toggling -->
            <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
                <ul class="nav navbar-nav navbar-right">
      <li><a href="admin_inbox.php"><i class="fa fa-dashboard"></i> Dashboard</a></li>
                     <li><a href="admin_logout.php"><i class="fa fa-sign-out"></i> Logout</a></li>
               
                   
                </ul>
            </div>
            <!-- /.navbar-collapse -->
        </div>
        <!-- /.container -->
    </nav>