CSS MenuNav Hamburger Animation.html

<style>
:root {
	--barHeight: 20%;
}
#hamburger {
	width: 30px;
	height: 30px;
	overflow: hidden;
	position: relative;
	border: 10px solid transparent;
	box-shadow: 0px 0px 0px 1px rgba(0,0,0,0.2);
	border-radius: 3px;
}
#hamburger > div {
	width: 100%;
	height: var(--barHeight);
	background: #333;
	transition: 0.5s all ease;
	position: relative;
	position: absolute;
	transform: rotate(0);
}
#hamburger > div:nth-child(1) {
	top:0;
}
#hamburger > div:nth-child(2) {
	top: calc( 50% - ( var(--barHeight) / 2 ) );
}
#hamburger > div:nth-child(3) {
	bottom:0;
}	

/* opened */
#hamburger.open > div:nth-child(1) {
	transform: rotate(45deg); 
	top: calc( 50% - ( var(--barHeight) / 2 ) );
}
#hamburger.open > div:nth-child(2) {
	transform: translateX(-100%);
	transition: 0.25s transform ease;
}
#hamburger.open > div:nth-child(3) {
	transform: rotate(-45deg) ;
	bottom: calc( 50% - ( var(--barHeight) / 2 ) );;
}
</style>

<div id='hamburger'>
	<div></div>
	<div></div>
	<div></div>
</div>

<script src="http://code.jquery.com/jquery-latest.js"></script>
<script>
$(window).load(function() {
	$('#hamburger').on('click',function(){
		$('#hamburger').toggleClass('open')
	})
});
</script>