Site search

<link rel="stylesheet" href="https://bootstraptema.ru/plugins/2015/bootstrap3/bootstrap.min.css" />
<script src="https://bootstraptema.ru/assets/js/jquery-1.10.2.js"></script>
<script src="https://bootstraptema.ru/plugins/2015/bootstrap3/bootstrap.min.js"></script>
<style>
 .dropdown-menu {
 width: 100%;
 position: fixed;
 top: 50px;
 left: 0;
 z-index: 1000;
 display: none;
 float: left;
 min-width: 160px;
 padding: 5px 0;
 margin: 0 auto;
 text-align: left;
 }
 
 .dropdown-menu li {
 display: inline-block;
 }
 
 .dropdown-menu li.dropdown .dropdown-menu {
 top: 210px;
 }
 
 .dropdown-menu li.dropdown {
 background: #ccc;
 }
</style>
<div class="navbar navbar-default navbar-fixed-top">
 <div class="container-fluid">
 <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="#">Brand</a>
 </div>
 <div class="collapse navbar-collapse">
 <ul class="nav navbar-nav">
 <li class="dropdown">
 <!-- having the href link here doesn't seem to...

3-level vertical drop-down menu
A three-level drop-down vertical menu in Bootstrap 3, complete with a ready-made HTML snippet for installation on your website.
* BootstrapTheme Code Snippet.

<link rel="stylesheet" href="https://bootstraptema.ru/plugins/2015/bootstrap3/bootstrap.min.css" />
<style>
 .dropdown-submenu {
 position: relative;
 }
 
 .dropdown-submenu>.dropdown-menu {
 top: 0;
 left: 100%;
 margin-top: -6px;
 margin-left: -1px;
 -webkit-border-radius: 0 6px 6px 6px;
 -moz-border-radius: 0 6px 6px 6px;
 border-radius: 0 6px 6px 6px;
 }
 
 .dropdown-submenu:hover>.dropdown-menu {
 display: block;
 }
 
 .dropdown-submenu>a:after {
 display: block;
 content: " ";
 float: right;
 width: 0;
 height: 0;
 border-color: transparent;
 border-style: solid;
 border-width: 5px 0 5px 5px;
 border-left-color: #cccccc;
 margin-top: 5px;
 margin-right: -10px;
 }
 
 .dropdown-submenu:hover>a:after {
 border-left-color:...