Morphing Menu only with css

HTML

					
					
<div class="container">
	<!-- This checkbox will give us the toggle behavior, it will be hidden, but functional -->
	<input id="toggle" type="checkbox">

	<!-- IMPORTANT: Any element that we want to modify when the checkbox state changes go here, being "sibling" of the checkbox element -->

	<!-- This label is tied to the checkbox, and it will contain the toggle "buttons" -->
	<label class="toggle-container" for="toggle">
		<!-- If menu is open, it will be the "X" icon, otherwise just a clickable area behind the hamburger menu icon -->
		<span class="button button-toggle"></span>
	</label>

	<!-- The nav menu -->
	<nav class="nav">
		<a class="nav-item" href="">Menu 1</a>
		<a class="nav-item" href="">Menu 2</a>
		<a class="nav-item" href="">Menu 3</a>
		<a class="nav-item" href="">Menu 4</a>
	</nav>

	<section class="content">
		<h1>Content</h1>
		<div class="text">
			<span></span><span></span>
		</div>
		<div class="square"></div>
		<div class="square"></div>
		<div class="square"></div>
	</section>
</div>

CSS

					
					
.container {
	position: relative;
	margin: 35px auto 0;
	width: 300px;
	height: 534px;
	background-color: #F5F5F5;
	overflow: hidden;
}

/* Toggle functionality */
#toggle {
	display: none;
}

#toggle:focus ~ .toggle-container .button-toggle {
	box-shadow: 0 0 0 8px rgba(0, 0, 0, 0.1), inset 0 0 0 20px rgba(0, 0, 0, 0.1);
}

#toggle:checked ~ .toggle-container .button-toggle {
	box-shadow: 0 0 0 556px rgba(0, 0, 0, 0.1), inset 0 0 0 20px rgba(0, 0, 0, 0.1);
}
#toggle:checked ~ .toggle-container .button-toggle:hover {
	box-shadow: 0 0 0 550px rgba(0, 0, 0, 0.1), inset 0 0 0 20px rgba(0, 0, 0, 0.1), 0 0 0 8px rgba(0, 0, 0, 0.1), inset 0 0 0 20px rgba(0, 0, 0, 0.1);
}
#toggle:checked ~ .toggle-container .button-toggle:before {
	-webkit-transform: translateY(-50%) rotate(45deg) scale(1);
	        transform: translateY(-50%) rotate(45deg) scale(1);
}
#toggle:checked ~ .toggle-container .button-toggle:after {
	-webkit-transform: translateY(-50%) rotate(-45deg) scale(1);
	        transform: translateY(-50%) rotate(-45deg) scale(1);
}
#toggle:checked:focus ~ .toggle-container .button-toggle {
	box-shadow: 0 0 0 550px rgba(0, 0, 0, 0.1), inset 0 0 0 20px rgba(0, 0, 0, 0.1), 0 0 0 8px rgba(0, 0, 0, 0.1), inset 0 0 0 20px rgba(0, 0, 0, 0.1);
}
#toggle:checked ~ .nav {
	margin-bottom: 100px;
	pointer-events: auto;
	-webkit-transform: translate(50px, 50px);
	        transform: translate(50px, 50px);
}
#toggle:checked ~ .nav .nav-item {
	color: #C53532;
	letter-spacing: 0;
	height: 40px;
	line-height: 40px;
	margin-top: 0;
	opacity: 1;
	-webkit-transform: scaleY(1);
	        transform: scaleY(1);
	-webkit-transition: 0.5s, opacity 0.1s;
	transition: 0.5s, opacity 0.1s;
}
#toggle:checked ~ .nav .nav-item:nth-child(1) {
	-webkit-transition-delay: 0.15s;
	        transition-delay: 0.15s;
}
#toggle:checked ~ .nav .nav-item:nth-child(1):before {
	-webkit-transition-delay: 0.15s;
	        transition-delay: 0.15s;
}
#toggle:checked ~ .nav .nav-item:nth-child(2) {
	-webkit-transition-delay: 0.1s;
	        transition-delay: 0.1s;
}
#toggle:checked ~ .nav .nav-item:nth-child(2):before {
	-webkit-transition-delay: 0.1s;
	        transition-delay: 0.1s;
}
#toggle:checked ~ .nav .nav-item:nth-child(3) {
	-webkit-transition-delay: 0.05s;
	        transition-delay: 0.05s;
}
#toggle:checked ~ .nav .nav-item:nth-child(3):before {
	-webkit-transition-delay: 0.05s;
	        transition-delay: 0.05s;
}
#toggle:checked ~ .nav .nav-item:nth-child(4) {
	-webkit-transition-delay: 0s;
	        transition-delay: 0s;
}
#toggle:checked ~ .nav .nav-item:nth-child(4):before {
	-webkit-transition-delay: 0s;
	        transition-delay: 0s;
}
#toggle:checked ~ .nav .nav-item:before {
	opacity: 0;
}
#toggle:checked ~ .content {
	padding-top: 30px;
	background-color: rgba(0, 0, 0, 0.3);
}

/* Toggle button */
.button-toggle {
	position: absolute;
	display: inline-block;
	width: 20px;
	height: 20px;
	margin: 25px;
	background-color: transparent;
	border: none;
	cursor: pointer;
	border-radius: 100%;
	-webkit-transition: 0.6s;
	transition: 0.6s;
}
.button-toggle:hover {
	box-shadow: 0 0 0 8px rgba(0, 0, 0, 0.1), inset 0 0 0 20px rgba(0, 0, 0, 0.1);
}
.button-toggle:before, .button-toggle:after {
	position: absolute;
	content: '';
	top: 50%;
	left: 0;
	width: 100%;
	height: 2px;
	background-color: #c53532;
	border-radius: 5px;
	-webkit-transition: 0.5s;
	transition: 0.5s;
}
.button-toggle:before {
	-webkit-transform: translateY(-50%) rotate(45deg) scale(0);
	        transform: translateY(-50%) rotate(45deg) scale(0);
}
.button-toggle:after {
	-webkit-transform: translateY(-50%) rotate(-45deg) scale(0);
	        transform: translateY(-50%) rotate(-45deg) scale(0);
}

/* Menu */
.nav {
	display: inline-block;
	margin: 25px 25px 20px;
	pointer-events: none;
	-webkit-transition: 0.5s;
	transition: 0.5s;
}

.nav-item {
	position: relative;
	display: block;
	color: transparent;
	font-size: 14px;
	letter-spacing: -6.8px;
	height: 7px;
	width: 20px;
	line-height: 7px;
	text-transform: uppercase;
	white-space: nowrap;
	-webkit-transform: scaleY(0.2);
	        transform: scaleY(0.2);
	-webkit-transition: 0.5s, opacity 1s;
	transition: 0.5s, opacity 1s;
}
.nav-item:nth-child(1) {
	-webkit-transition-delay: 0s;
	        transition-delay: 0s;
}
.nav-item:nth-child(1):before {
	-webkit-transition-delay: 0s;
	        transition-delay: 0s;
}
.nav-item:nth-child(2) {
	-webkit-transition-delay: 0.05s;
	        transition-delay: 0.05s;
}
.nav-item:nth-child(2):before {
	-webkit-transition-delay: 0.05s;
	        transition-delay: 0.05s;
}
.nav-item:nth-child(3) {
	-webkit-transition-delay: 0.1s;
	        transition-delay: 0.1s;
}
.nav-item:nth-child(3):before {
	-webkit-transition-delay: 0.1s;
	        transition-delay: 0.1s;
}
.nav-item:nth-child(4) {
	-webkit-transition-delay: 0.15s;
	        transition-delay: 0.15s;
}
.nav-item:nth-child(4):before {
	-webkit-transition-delay: 0.15s;
	        transition-delay: 0.15s;
}
.nav-item:nth-child(n + 4) {
	margin-top: -7px;
	opacity: 0;
}
.nav-item:before {
	position: absolute;
	content: '';
	top: 50%;
	left: 0;
	width: 100%;
	height: 2px;
	background-color: #c53532;
	-webkit-transform: translateY(-50%) scaleY(5);
	        transform: translateY(-50%) scaleY(5);
	-webkit-transition: 0.5s;
	transition: 0.5s;
}

/* Content */
.content {
	position: relative;
	text-align: center;
	-webkit-transition: 0.5s;
	transition: 0.5s;
}

.text {
	margin: 15px 0 30px;
}
.text span {
	display: inline-block;
	height: 10px;
	margin: 0 5px;
	background-color: #666666;
	border-radius: 5px;
}
.text span:first-child {
	width: 50px;
}
.text span:last-child {
	width: 80px;
}

.square {
	display: inline-block;
	position: relative;
	width: 250px;
	height: 100px;
	background-color: #666666;
}

Resources: ➤ http://www.scottohara.me/article/css-morph-menu-button.html; ➤ http://codepen.io/lmgonzalves/pen/KaWaJO?editors=1100

Morphing Menu

Content

HTML

CSS

Resources