JSFiddle - React, Tailwind, and code Playground

HTML

<div class="postit-surround">
<a href="#">
    <div class="postit">
        <div class="pin">
            <img src="<?php echo get_template_directory_uri(); ?>/assets/drawing-pin.png">
        </div>
        <div class="postit-title">
            <h1 class="nav-title-text">Products</h1>
        </div>
        <div class="corner-peel">
            <img src="<?php echo get_template_directory_uri(); ?>/assets/corner-flick-cyan.png">
        </div>
    </div>
</a>
<div class="navigation-dropdown">
    <ul>
        <li>
            <h2 class="dropdown-text">Products 1</h2>
        </li>
        <li>
            <h2 class="dropdown-text">Products 2</h2>
        </li>
        <li>
            <h2 class="dropdown-text">Products 3</h2>
        </li>
        <li>
            <h2 class="dropdown-text">Products 4</h2>
        </li>
        <li>
            <h2 class="dropdown-text">Products 5</h2>
        </li>
    </ul>
</div>
</div>

CSS

.postit-surround {
	width: 120px;
	height: 110px;
	position: relative;
	display: inline-block;
	margin: 0px 5px;
}
.postit {
	width: 120px;
	height: 110px;
	background-color: #888888;
	position: relative;
	margin: 20px auto;
	display: inline-block;
	margin: 20px 5px;
	-webkit-transition: all 0.5s ease-in-out;
  	-moz-transition: all 0.5s ease-in-out;
  	-o-transition: all 0.5s ease-in-out;
  	transition: all 0.5s ease-in-out;
  	-webkit-box-shadow: -3px -3px 5px 0px rgba(90, 90, 90, 0.6);
-moz-box-shadow:    -3px -3px 5px 0px rgba(90, 90, 90, 0.6);
box-shadow:         -3px -3px 5px 0px rgba(90, 90, 90, 0.6);
}
.pin {
	position: absolute;
	width: 20px;
	height: auto;
	top: 3px;
	left: 3px;
}
.pin > img {
	width: 15px;
	height: 15px;
}
.corner-peel {
	width: 120px;
	height: 110px;
	position: absolute;
	bottom: -1px;
	right: -1px;
}
.corner-peel > img {
	width: 30px;
	height: 30px;
	position: absolute;
	bottom: 0;
	right: 0;
}
.postit:hover {
	-webkit-transition: all 0.5s ease-in-out;
  	-moz-transition: all 0.5s ease-in-out;
  	-o-transition: all 0.5s ease-in-out;
  	transition: all 0.5s ease-in-out;
}
.postit-title {
	text-align: center;
	font-family: Arial, Helvetica, sans-serif;
	padding-top: 30px;
	font-size: 20px;
	vertical-align: middle;
	color: #ffffff;
}
.nav-title-text {
	font-size: 20px;
	vertical-align: middle;
	color: #ffffff;
	text-align: center;
	font-family: Arial, Helvetica, sans-serif;
	font-weight: normal;
}
.dropdown-text {
	color: #ffffff;
	font-family: arial, helvetica, sans-serif;
	font-size: 14px;
	line-height: 16px;
	text-align: left;
	margin: 0px;
	font-weight: normal;
}
div.navigation-dropdown {
	position: absolute;
	top: 80px;
	left: -5px;
}
div.navigation-dropdown > ul {
	padding: 0px;
	margin: 0px;
	position: absolute;
	top: 20px;
	width: 120px;
	left: 15px;
	z-index: 80;
}
div.navigation-dropdown > ul > li {
	padding: 10px 10px 20px 10px;
	list-style-type: none;
	background-color: #fbe73d;
	margin-top: -15px;
	margin-bottom:...

JavaScript

//START OF MAIN NAVIATION SCRIPT

	$("div.corner-peel").click(function(){
		$(this).find("img").stop();
		$(this).find("img").animate({ 
			height: "160px", 
			width: "160px"
		}, 1000);
	});

	$("div.corner-peel").hover(function(){
		$(this).find("img").animate({ 
			height: "60px", 
			width: "60px"
		}, 500);
	}, function() {
		$(this).find("img").animate({ 
			height: "30px", 
			width: "30px"
		}, 500);
	});

// END OF MAIN NAVIGATION SCRIPT

// START OF NAVIGATION DROPDOWN SCRIPT

	$("div.navigation-dropdown").children().children().hide();
	$("div.postit-surround").hover(function(){
		if(!$(this).find("div.navigation-dropdown > ul > li").is(":visible")) {
			var offset = 50;
			function dropdown(x){
				setTimeout(function() {
					$(x).fadeIn(200);
					$(x).addClass("dropdown-anim");
				},$(x).index() * offset)
			};
			$(this).find("div.navigation-dropdown > ul > li").each(function(){
				dropdown(this);
			});
		} else {
			stop();
		};
	}, function returning(){
			if($(this).find("div.navigation-dropdown > ul > li").is(":visible")) {		
				var offset = 50;
				var totalLi = $("div.navigation-dropdown > ul > li").length;
				function dropup(y){
					setTimeout(function() {
						$(y).fadeOut(200);
						$(y).removeClass("dropdown-anim");
					},(totalLi-$(y).index()) * offset);
				};
				$($(this).find("div.navigation-dropdown > ul > li").get().reverse()).each(function() {
				    dropup(this);
				});
			} else {
				stop();
			};
	});

// END OF NAVIGATION DROPDOWN SCRIPT