<link href="//netdna.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css"> <script src="//netdna.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script> <script src="//code.jquery.com/jquery-1.11.1.min.js"></script> <!------ Include the above in your HEAD tag ----------> <ul class="nav"> <a class="brand" href="#">PHP Flow</a> <li class="active"><a href="#">Home</a></li> <li><a href="#">JQuery</a></li> <li class="dropdown" id="accountmenu"> <a class="dropdown-toggle" data-toggle="dropdown" href="#">Web Technology<b class="caret"></b></a> <ul class="dropdown-menu"> <li><a href="#">PHP</a></li> <li class="dropdown-submenu"> <a tabindex="-1" href="#">Framework</a> <ul class="dropdown-menu"> <li><a tabindex="-1" href="#">Zend</a></li> <li class="dropdown-submenu"> <a href="#">CMS</a> <ul class="dropdown-menu"> <li><a href="#">WordPress</a></li> <li><a href="#">joomla</a></li> </ul> </li> <li><a href="#">Cake</a></li> <li><a href="#">Symphony</a></li> </ul> </li> </ul> </li> </ul>

body { background:#f0f0f0; } .nav { left:50%; margin-left:-150px; top:50px; position:absolute; } .nav>li>a:hover, .nav>li>a:focus, .nav .open>a, .nav .open>a:hover, .nav .open>a:focus { background:#fff; } .dropdown { background:#fff; border:1px solid #ccc; border-radius:4px; width:300px; } .dropdown-menu>li>a { color:#428bca; } .dropdown ul.dropdown-menu { border-radius:4px; box-shadow:none; margin-top:20px; width:300px; } .dropdown ul.dropdown-menu:before { content: ""; border-bottom: 10px solid #fff; border-right: 10px solid transparent; border-left: 10px solid transparent; position: absolute; top: -10px; right: 16px; z-index: 10; } .dropdown ul.dropdown-menu:after { content: ""; border-bottom: 12px solid #ccc; border-right: 12px solid transparent; border-left: 12px solid transparent; position: absolute; top: -12px; right: 14px; z-index: 9; }