nav.php

<div class="navbar-wrapper">
    <div class="container">
<nav class="navbar navbar-default navbar-fixed-top" role="navigation">
    <div class="container">
        <div class="navbar-header">
            <button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse">
              <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="<?php esc( $theme_url ); ?>/index.php">
                <img src="<?php esc( $theme_url ); ?>/lib/img/tsw-logoem.png" />
            </a>
        </div>
        <div id="navbar" class="navbar-collapse collapse">
            <ul class="nav navbar-nav" id="grad-menu">
                <li><a class="grad-anchor" href="<?php esc( $theme_url ); ?>/index.php"    title="forms">Read Articles</a></li>
                <li><a class="grad-anchor" href="<?php esc( $theme_url ); ?>/view-list.php" title="forms">List Articles</a></li>
            </ul>
            <h1 id="nav-header-title" class="nopadding"><?php esc( $det_name ); ?></h1>
        </div>
    </div>
</nav>
    </div><!--/.nav-collapse -->
</div><!--/.container-fluid -->