Hi,
Please refer below sample
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<style type="text/css">
.nav-side-menu
{
overflow: auto;
font-family: verdana;
font-size: 12px;
font-weight: 200;
background-color: #2e353d;
position: fixed;
top: 0px;
width: 300px;
height: 100%;
color: #e1ffff;
}
.nav-side-menu .brand
{
background-color: #23282e;
line-height: 50px;
display: block;
text-align: center;
font-size: 14px;
}
.nav-side-menu .toggle-btn
{
display: none;
}
.nav-side-menu ul, .nav-side-menu li
{
list-style: none;
padding: 0px;
margin: 0px;
line-height: 35px;
cursor: pointer; /*
.collapsed{
.arrow:before{
font-family: FontAwesome;
content: "\f053";
display: inline-block;
padding-left:10px;
padding-right: 10px;
vertical-align: middle;
float:right;
}
}
*/
}
.nav-side-menu ul :not(collapsed) .arrow:before, .nav-side-menu li :not(collapsed) .arrow:before
{
font-family: FontAwesome;
content: "\f078";
display: inline-block;
padding-left: 10px;
padding-right: 10px;
vertical-align: middle;
float: right;
}
.nav-side-menu ul .active, .nav-side-menu li .active
{
border-left: 3px solid #d19b3d;
background-color: #4f5b69;
}
.nav-side-menu ul .sub-menu li.active, .nav-side-menu li .sub-menu li.active
{
color: #d19b3d;
}
.nav-side-menu ul .sub-menu li.active a, .nav-side-menu li .sub-menu li.active a
{
color: #d19b3d;
}
.nav-side-menu ul .sub-menu li, .nav-side-menu li .sub-menu li
{
background-color: #181c20;
border: none;
line-height: 28px;
border-bottom: 1px solid #23282e;
margin-left: 0px;
}
.nav-side-menu ul .sub-menu li:hover, .nav-side-menu li .sub-menu li:hover
{
background-color: #020203;
}
.nav-side-menu ul .sub-menu li:before, .nav-side-menu li .sub-menu li:before
{
font-family: FontAwesome;
content: "\f105";
display: inline-block;
padding-left: 10px;
padding-right: 10px;
vertical-align: middle;
}
.nav-side-menu li
{
padding-left: 0px;
border-left: 3px solid #2e353d;
border-bottom: 1px solid #23282e;
}
.nav-side-menu li a
{
text-decoration: none;
color: #e1ffff;
}
.nav-side-menu li a i
{
padding-left: 10px;
width: 20px;
padding-right: 20px;
}
.nav-side-menu li:hover
{
border-left: 3px solid #d19b3d;
background-color: #4f5b69;
-webkit-transition: all 1s ease;
-moz-transition: all 1s ease;
-o-transition: all 1s ease;
-ms-transition: all 1s ease;
transition: all 1s ease;
}
@media (max-width: 767px)
{
.nav-side-menu
{
position: relative;
width: 100%;
margin-bottom: 10px;
}
.nav-side-menu .toggle-btn
{
display: block;
cursor: pointer;
position: absolute;
right: 10px;
top: 10px;
z-index: 10 !important;
padding: 3px;
background-color: #ffffff;
color: #000;
width: 40px;
text-align: center;
}
.brand
{
text-align: left !important;
font-size: 22px;
padding-left: 20px;
line-height: 50px !important;
}
}
@media (min-width: 767px)
{
.nav-side-menu .menu-list .menu-content
{
display: block;
}
}
body
{
margin: 0px;
padding: 0px;
}
</style>
</head>
<body>
<form id="form1" runat="server">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.0/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css"
rel="stylesheet">
<link href="//maxcdn.bootstrapcdn.com/font-awesome/4.2.0/css/font-awesome.min.css"
rel="stylesheet">
<script type="text/javascript">
$(function () {
$('ul#menu-content > ul').on('show.bs.collapse', function (e, obj) {
$("ul#menu-content > ul").not(this).removeClass("in");
var currentHead = $(this).prev("li");
$("ul#menu-content > li").not(currentHead).removeClass("active");
$(currentHead).addClass("active");
})
});
</script>
<div class="nav-side-menu">
<div class="brand">
Brand Logo</div>
<i class="fa fa-bars fa-2x toggle-btn" data-toggle="collapse" data-target="#menu-content">
</i>
<div class="menu-list">
<ul id="menu-content" class="menu-content collapse out">
<li><a href="#"><i class="fa fa-dashboard fa-lg"></i>Dashboard </a></li>
<li data-toggle="collapse" data-target="#products" class="collapsed active"><a href="#">
<i class="fa fa-gift fa-lg"></i>Menu A <span class="arrow"></span></a></li>
<ul class="sub-menu collapse" id="products">
<li class="active"><a href="#">CSS3 Animation</a></li>
<li><a href="#">General</a></li>
<li><a href="#">Buttons</a></li>
<li><a href="#">Tabs & Accordions</a></li>
<li><a href="#">Typography</a></li>
<li><a href="#">FontAwesome</a></li>
<li><a href="#">Slider</a></li>
<li><a href="#">Panels</a></li>
<li><a href="#">Widgets</a></li>
<li><a href="#">Bootstrap Model</a></li>
</ul>
<li data-toggle="collapse" data-target="#service" class="collapsed"><a href="#"><i
class="fa fa-globe fa-lg"></i>Menu B <span class="arrow"></span></a></li>
<ul class="sub-menu collapse" id="service">
<li>New Service 1</li>
<li>New Service 2</li>
<li>New Service 3</li>
</ul>
<li data-toggle="collapse" data-target="#new" class="collapsed"><a href="#"><i class="fa fa-car fa-lg">
</i>Menu C <span class="arrow"></span></a></li>
<ul class="sub-menu collapse" id="new">
<li>New New 1</li>
<li>New New 2</li>
<li data-toggle="collapse" data-target="#new3" class="collapsed"><a href="#"><i class="fa fa-car fa-lg">
</i>New New 3 <span class="arrow"></span></a></li>
<ul class="sub-menu collapse" id="new3">
<li>New Service 31</li>
<li>New Service 32</li>
<li>New Service 33</li>
</ul>
</ul>
<li><a href="#"><i class="fa fa-user fa-lg"></i>Profile </a></li>
<li><a href="#"><i class="fa fa-users fa-lg"></i>Users </a></li>
</ul>
</div>
</div>
</form>
</body>
</html>
Demo 