<!-- button -->
<a class="mobile-menu js-touch-menu" href="#">
	<span></span>
</a>
<!-- css -->
.mobile-menu {
	background: #ff6262 none repeat scroll 0 0;
	display: none;
	height: 40px;
	padding: 9px;
	position: fixed;
	right: 0;
	text-transform: uppercase;
	top: 0;
	width: 53px;
	z-index: 99999;
}
.mobile-menu span {
	background-color: #fff;
	display: block;
	height: 2px;
	margin: 8px auto;
	position: relative;
	width: 23px;
	transition: all 0.1s ease-in-out 0s;
}
.mobile-menu span:before,
.mobile-menu span:after {
	background: #fff none repeat scroll 0 0;
	content: "";
	display: block;
	height: 2px;
	left: 0;
	position: absolute;
	right: 0;
	top: -8px;
	@include transition($default-transition);
}
.mobile-menu span:after {
	bottom: -8px;
	top: auto;
}
.mobile-menu.active span{
	background-color: transparent;
	border-color:transparent;
}
.mobile-menu.active span:before {
	left: 3px;
	right: 3px;
	top: 0;
	@include rotate(-45deg);
}
.mobile-menu.active span:after {
	left: 3px;
	right: 3px;
	top: 0;
	@include rotate(45deg);
}
.fixid{
	position: fixed;
	z-index: 999;
}
<!-- js -->
	var touch 	= $('.js-touch-menu');
	var menu 	= $('.header-nav');
	var header = $('header');
	$(touch).on('click', function(e) {
		e.preventDefault();
		$(this).toggleClass('active');
		menu.slideToggle();
		header.toggleClass('fixid');
	});