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.menu-btn{
	width:48px;
	height: 48px;
	float:right;
	margin-top: 0;
	cursor: pointer;
	pointer-events: auto;
}

.menu-bar{
	height: 7px;
	width: 100%;
	background: #fff;
	display: inline-block;
	-webkit-transition: all 0.4s ease-in-out 0.4s;
	-moz-transition: all 0.4s ease-in-out 0.4s;
	-o-transition: all 0.4s ease-in-out 0.4s;
	transition: all 0.4s ease-in-out 0.4s;
}

.bar-t{
	-webkit-transition: all 0.4s ease-in-out;
	-moz-transition: all 0.4s ease-in-out;
	-o-transition: all 0.4s ease-in-out;
	transition: all 0.4s ease-in-out;
	position:relative;
	top:0;
}

.bar-m{
	-webkit-transition: all 0.4s ease-in-out;
	-moz-transition: all 0.4s ease-in-out;
	-o-transition: all 0.4s ease-in-out;
	transition: all 0.4s ease-in-out;
	opacity: 1;
}

.bar-b{
	-webkit-transition: all 0.4s ease-in-out;
	-moz-transition: all 0.4s ease-in-out;
	-o-transition: all 0.4s ease-in-out;
	transition: all 0.4s ease-in-out;
	position:relative;
	top:0;
}

/*  When Open  */

.open .bar-t{
	-webkit-transform: rotate(45deg); /* Chrome, Safari, Opera */
	-moz-transform: rotate(45deg); 
	-ms-transform: rotate(45deg); /* IE 9 */
	transform: rotate(45deg);
	top:32%;
}

.open .bar-m{
	opacity: 0;
}

.open .bar-b{
	-webkit-transform: rotate(-45deg); /* Chrome, Safari, Opera */
	-moz-transform: rotate(-45deg); 
	-ms-transform: rotate(-45deg); /* IE 9 */
	transform: rotate(-45deg);
	top:-32%;
}

/*====================================================
 Menu Button and Menu // **.close should be put on links
====================================================*/

$(".menu-btn").click(function(){
	$(".mobile-menu").toggleClass("visible");
	$(".menu-btn").toggleClass("open");
	$(".home").toggleClass( "lock" );
});

$(".close").click(function(){
	$(".mobile-menu").toggleClass("visible");
	$(".menu-btn").toggleClass( "open" );
	$(".home").toggleClass( "lock" );
});

<div class="menu-btn">
	<span class="menu-bar bar-t"></span>
	<span class="menu-bar bar-m"></span>
	<span class="menu-bar bar-b"></span>
</div>

This is a sweet html/css/js animated hamburger menu.  It turns to an X when clicked, and then back to the triple line when clicked again.