php use same html code for navigation code example
Example 1: navigation bar on more than one page
<script src="https://code.jquery.com/jquery-1.10.2.js"></script>
<div id="nav-placeholder">
</div>
<script>
$(function(){
$("#nav-placeholder").load("nav.html");
});
</script>
Example 2: navbar multiple pages
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" href="./bootstrap-3.3.2-dist/css/bootstrap.min.css">
</head>
<body>
<div class="container">
<@wpbModule externalKey="9255b083-95a3-4752-a4fd-5bad5ad57fc0" />
<h2> Home page </h2>
Dummy home page...
</div>
</body>
</html>