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CSS Base

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              <div id="menu">
		<div class="hamburger">
			<div class="line"></div>
			<div class="line"></div>
			<div class="line"></div>
		</div>
		<div class="menu-inner">
			
			<ul>
				<li>Menu Item</li>
				<li>Menu Item</li>
				<li>Menu Item</li>
				<li>Menu Item</li>
				<li>Menu Item</li>
				<li>Menu Item</li>
			</ul>
		</div>
  
  
		
		<svg version="1.1" id="blob"xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
			<path id="blob-path" d="M60,500H0V0h60c0,0,20,172,20,250S60,900,60,500z"/>
		</svg>
	</div>


<h2> hover close to the menu </h2>

            
          
!
            
              		body, html {
			margin: 0;
			padding: 0;
			width: 100%;
			height: 100%;
			background-color:#26394E ;
		}

		#menu {
			height: 100%;
			position: fixed;
			background-color: #FED057;
			width: 300px;
			transition: 1000ms all cubic-bezier(0.19, 1, 0.22, 1);
			transform: translateX(-100%);
			left: 60px;
		}

		#menu.expanded {
			transform: translateX(0%);
			left: 0px;
		}

		.menu-inner {
			width: 100%;
			height: 100%;
			position: relative;
		}

		#blob {
			top: 0;
			z-index: -1;
			right: 60px;
			transform: translateX(100%);
			height: 100%;
			position: absolute;
		}

		#blob-path {
			height: 100%;
			fill:  #FED057;
		}

		.hamburger {
			right: 20px;
			position: absolute;
			width: 20px;
			height: 20px;
			margin-top: -10px;	
		}

		.hamburger .line {
			width: 100%;
			height: 4px;
			background-color: #fff;
			position: absolute;
		}

		.hamburger .line:nth-child(2) {
			top: 50%;
			margin-top: -2px;
		}

		.hamburger .line:nth-child(3) {
			bottom: 0;
		}

		h1 {
			position: fixed;
			right: 0;
			margin: 0;
		}

		ul {
			padding: 0;
			list-style: none;
			width: 80%;
			margin-left: 10%;
			position: absolute;
			top: 10px;
		}

		ul li {
			color: #fff;
			font-family: sans-serif;
			padding: 20px 0;
		}

		h2 {
			position: absolute;
		   left: 50%;
      color: #fff;
			margin: 0;
      font-size: 16px;
      font-family: sans-serif;
      font-weight: 100;
		}


	
            
          
!
            
              $(window).load(function(){
	var height = window.innerHeight,
  x= 0, y= height/2,
	curveX = 10,
	curveY = 0,
	targetX = 0,
	xitteration = 0,
	yitteration = 0,
	menuExpanded = false;
	
	blob = $('#blob'),
	blobPath = $('#blob-path'),

	hamburger = $('.hamburger');

	$(this).on('mousemove', function(e){
		x = e.pageX;
		
		y = e.pageY;
	});

	$('.hamburger, .menu-inner').on('mouseenter', function(){
		$(this).parent().addClass('expanded');
		menuExpanded = true;
	});

	$('.menu-inner').on('mouseleave', function(){
		menuExpanded = false;
		$(this).parent().removeClass('expanded');
	});

	function easeOutExpo(currentIteration, startValue, changeInValue, totalIterations) {
		return changeInValue * (-Math.pow(2, -10 * currentIteration / totalIterations) + 1) + startValue;
	}

	var hoverZone = 150;
	var expandAmount = 20;
	
	function svgCurve() {
		if ((curveX > x-1) && (curveX < x+1)) {
			xitteration = 0;
		} else {
			if (menuExpanded) {
				targetX = 0;
			} else {
				xitteration = 0;
				if (x > hoverZone) {
					targetX = 0;
				} else {
					targetX = -(((60+expandAmount)/100)*(x-hoverZone));
				}			
			}
			xitteration++;
		}

		if ((curveY > y-1) && (curveY < y+1)) {
			yitteration = 0;
		} else {
			yitteration = 0;
			yitteration++;	
		}

		curveX = easeOutExpo(xitteration, curveX, targetX-curveX, 100);
		curveY = easeOutExpo(yitteration, curveY, y-curveY, 100);

		var anchorDistance = 200;
		var curviness = anchorDistance - 40;

		var newCurve2 = "M60,"+height+"H0V0h60v"+(curveY-anchorDistance)+"c0,"+curviness+","+curveX+","+curviness+","+curveX+","+anchorDistance+"S60,"+(curveY)+",60,"+(curveY+(anchorDistance*2))+"V"+height+"z";

		blobPath.attr('d', newCurve2);

		blob.width(curveX+60);

		hamburger.css('transform', 'translate('+curveX+'px, '+curveY+'px)');
    
    $('h2').css('transform', 'translateY('+curveY+'px)');
		window.requestAnimationFrame(svgCurve);
	}

	window.requestAnimationFrame(svgCurve);
	
});
            
          
!
999px
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