Tutorial by Examples

Html: <nav class="navbar navbar-defalt" data-offset-top="120" data-spy="affix" > ... </nav> Css: <style> .navbar { background-color: red; } .navbar.affix { background-color: green; } </style>

<div class="container" id="con"> <div class="row"> <div class="span12"> <div class="well"> <h1> Header </h1> </div> </div&gt...