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HTML 

              
                <nav>
	<input id="open" type="checkbox">
	<ul>
		<li><span><label for="open" aria-label="Close"><span class="sr">&times;</span></label></span></li>
		<li><span><a href="#">Our Menu</a></span></li>
		<li><span><a href="#">Locate</a></span></li>
		<li><span><a href="#">Deals</a></span></li>
		<li><span><a href="#">App</a></span></li>
		<li><span><a href="#">Trending</a></span></li>
	</ul>
</nav>
!

CSS 

              
                *, *:before, *:after {
	border: 0;
	box-sizing: border-box;
	margin: 0;
	padding: 0;
}
body {
	background: hsl(60,100%,90%);
	color: hsl(0,0%,9%);
	font-size: 20px;
	line-height: 1.5;
}
nav {
	$bun: hsl(40,100%,45%);
	$bunInner: hsl(40,100%,75%);
	$ketchup: hsl(0,100%,40%);
	$ketchupT: hsla(0,100%,40%,0);
	$ketchupLt: hsl(0,100%,80%);
	$ketchupLtT: hsla(0,100%,80%,0);
	$ketchupSh: hsl(0,100%,25%);
	$burger: hsl(0,40%,30%);
	$cheese: hsl(50,100%,50%);
	$cheeseLt: hsl(50,100%,75%);
	$cheeseLtT: hsla(50,100%,75%,0);
	$lettuce: hsl(120,50%,50%);
	$lettuceVein: hsl(120,50%,60%);
	$lettuceVeinT: hsla(120,50%,60%,0);
	$tomato: hsl(10,80%,55%);
	$tomatoT: hsla(10,80%,55%,0);
	$tomatoVein: hsl(10,80%,65%);
	$tomatoVeinT: hsla(10,80%,65%,0);
	$seed: hsl(45,100%,75%);
	$seedT: hsla(45,100%,75%,0);

	$transDur: 0.7s;
	$trans: $transDur ease-out;
		
	font: 1em "ZCOOL QingKe HuangYou", sans-serif;
	margin: 1.5em auto;
	width: 5em;
	height: 4.5em;
	text-transform: uppercase;
	input {
		border-radius: 50%;
		cursor: pointer;
		display: block;
		position: absolute;
		-webkit-appearance: none;
		appearance: none;
		width: 100%;
		height: 100%;
		z-index: 9;
		&:focus {
			outline: transparent;
		}
	}
	&, ul {
		position: relative;
	}
	li, span, a, label {
		display: block;
	}
	li {
		left: 50%;
		text-align: center;
		transform: translateX(-50%);
		width: 5em;
		&, span {
			position: absolute;
			transition: all $trans;
			transform-origin: 50% 0;
		}
		&:first-child, &:last-child {
			width: 4.4em;
			span {
				line-height: 4.5;
			}
		}
		&:first-child {
			background: $bunInner;
			border-radius: 0 0 0.45em 0.45em / 0 0 100% 100%;
			box-shadow:
				0.2em 0 0 $bun inset,
				-0.2em 0 0 $bun inset,
				0 0 0 $bun inset,
				0 -1.4em 0 $bun inset;
			top: 3.6em;
			height: 0.9em;
			z-index: 0;
			label {
				&:before, &:after {
					background: $ketchup;
					border-radius: 0.2em;
					box-shadow: 0 -0.1em 0 $ketchupSh inset;
					content: "";
					display: block;
					position: absolute;
					top: 50%;
					left: 50%;
					width: 3em;
					height: 0.4em;
				}
				&:before {
					background-image:
						radial-gradient(0.2em 0.3em at 0.2em 0.2em,$ketchupLt 49%,$ketchupLtT 50%);
					transform: translate(-50%,-50%) rotate(45deg);
				}
				&:after {
					background-image:
						radial-gradient(0.2em 0.3em at 2.8em 0.2em,$ketchupLt 49%,$ketchupLtT 50%);
					transform: translate(-50%,-50%) rotate(-45deg);
				}
			}
		}
		&:nth-child(2) {
			background: $burger;
			background-image:
				repeating-linear-gradient(
					hsla(0,0%,0%,0.3),
					hsla(0,0%,0%,0.3) 4%,
					hsla(0,0,0%,0) 5%,
					hsla(0,0,0%,0) 20%
				);
			background-position: 0 -0.35em;
			background-repeat: no-repeat;
			background-size: 100% 100%;
			border-radius: 0.35em;
			box-shadow:
				0.3em 0 0 $burger inset,
				-0.3em 0 0 $burger inset,
				0 0 0 $burger inset,
				0 -0.6em 0 $burger inset;
			top: 2.9em;
			width: 4.8em;
			height: 0.7em;
			z-index: 1;
			span {
				line-height: 5;
			}
			a {
				color: hsl(0,0%,100%);
			}
		}
		&:nth-child(3) {
			background: $cheese;
			background-image: radial-gradient(10% 10% at 15% 15%,$cheeseLt 49%,$cheeseLtT 50%);
			border-radius: 0.1em;
			top: 2.7em;
			width: 4em;
			height: 0.2em;
			z-index: 2;
			span {
				line-height: 4;
			}
			&:before {
				background: inherit;
				border-radius: 0 0 100% 50% / 0 0 100% 0;
				content: "";
				display: block;
				position: absolute;
				top: 100%;
				right: 0;
				width: 0.8em;
				height: 0.8em;
				transform: rotate(-45deg);
				transform-origin: 0 0;
				transition: transform $trans;
			}
		}
		&:nth-child(4) {
			background: $lettuce;
			background-image:
				linear-gradient(45deg,$lettuceVeinT 24%,$lettuceVein 25%,$lettuceVein 27%,$lettuceVeinT 28%),
				linear-gradient(45deg,$lettuceVeinT 46%,$lettuceVein 47%,$lettuceVein 49%,$lettuceVeinT 50%),
				linear-gradient(45deg,$lettuceVeinT 74%,$lettuceVein 75%,$lettuceVein 77%,$lettuceVeinT 78%),
				linear-gradient(-45deg,$lettuceVeinT 46%,$lettuceVein 47%,$lettuceVein 52%,$lettuceVeinT 53%);
			background-position: 0 0;
			border-radius: 0.15em;
			box-shadow:
				0 0.4em 0 $lettuce inset,
				-0.4em 0 0 $lettuce inset;
			top: 2.4em;
			width: 4.5em;
			height: 0.3em;
			z-index: 3;
			span {
				line-height: 4.5;
			}
		}
		&:nth-child(5) {
			background: $tomatoVein;
			background-image:
				radial-gradient(20% 25% at 50% 30%,$tomato 49%,$tomatoT 50%),
				radial-gradient(20% 25% at 50% 70%,$tomato 49%,$tomatoT 50%),
				radial-gradient(25% 20% at 30% 50%,$tomato 49%,$tomatoT 50%),
				radial-gradient(25% 20% at 70% 50%,$tomato 49%,$tomatoT 50%);
			background-position: 0 -0.4em;
			border-radius: 0.2em;
			box-shadow:
				0.4em 0 0 $tomato inset,
				-0.4em 0 0 $tomato inset,
				0 0 0 $tomato inset,
				0 -0.8em 0 $tomato inset;
			top: 2em;
			width: 5em;
			height: 0.4em;
			z-index: 4;
			span {
				line-height: 5;
			}
		}
		&:last-child {
			background: $bun;
			background-image:
				radial-gradient(0.5em 0.3em at 0.5em 0.2em,$seed 0.15em,$seedT 0.2em),
				radial-gradient(0.5em 0.3em at 0 0.7em,$seed 0.15em,$seedT 0.2em),
				radial-gradient(0.5em 0.3em at 1em 0.7em,$seed 0.15em,$seedT 0.2em);
			background-position: 0 0;
			background-size: 1em 1em;
			border-radius: 2em 2em 0 0 / 100% 100% 0 0;
			box-shadow: 0.4em 0 0 0 $bun inset, -0.4em 0 0 0 $bun inset;
			height: 2em;
			z-index: 5;
		}
		span, label, a {
			border-radius: inherit;
			height: 100%;
		}
		span {
			margin: auto;
			top: 0;
			width: 100%;
			transform: scaleY(0);
			transform-origin: 50% 0;
		}
		a {
			color: currentColor;
			text-decoration: none;
			&:before {
				background: $ketchup;
				background-image:
						radial-gradient(0.4em 0.2em at 3.3em 0.1em,$ketchupLt 49%,$ketchupLtT 50%);
				border-radius: 0.2em;
				box-shadow: 0 -0.1em 0 $ketchupSh inset;
				content: "";
				display: block;
				position: absolute;
				top: 62%;
				left: 50%;
				width: 3.5em;
				height: 0.4em;
				transform: translateX(-50%) scaleX(0);
				transform-origin: 0 50%;
				transition: transform 0.2s linear;
			}
			&:hover:before {
				transform: translateX(-50%) scaleX(1);
			}
		}
		.sr {
			overflow: hidden;
			width: 0;
			height: 0;
		}
	}
	input:checked + ul li {
		$items: 6;
		$hoverTransX: -60%;
		@for $i from 1 through $items {
			&:nth-child(#{$i}) {
				@if $i == 1 or $i == 6 {
					border-radius: 50%;
					box-shadow:
						0.1em 0 0 $bun inset,
						-0.1em 0 0 $bun inset,
						0 0.1em 0 $bun inset,
						0 -0.1em 0 $bun inset;
					height: 4.4em;
					@if $i == 1 {
						transform: translate(-50%,-3.5em);
					}
					@else {
						background-position: 0 2.2em;
						transform: translate(-50%,22.8em);
					}
				}
				@elseif $i == 2 {
					background-position: 0 0;
					border-radius: 50%;
					box-shadow:
						0.3em 0 0 $burger inset,
						-0.3em 0 0 $burger inset,
						0 0.3em 0 $burger inset,
						0 -0.3em 0 $burger inset;
					height: 4.8em;
					transform: translate(-50%,1.6em);
				}
				@elseif $i == 3 {
					border-radius: 0.2em;
					height: 4em;
					transform: translate(-50%,6.6em);
					&:before {
						transform: rotate(-90deg);
					}
				}
				@elseif $i == 4 {
					border-radius: 1.5em 1em 1.2em 0.8em;
					height: 4.5em;
					transform: translate(-50%,10.9em);
				}
				@else {
					border-radius: 50%;
					background-position: 0 0;
					box-shadow:
						0.4em 0 0 $tomato inset,
						-0.4em 0 0 $tomato inset,
						0 0.4em 0 $tomato inset,
						0 -0.4em 0 $tomato inset;
					height: 5em;
					transform: translate(-50%,15.8em);
				}
			}
		}
		span {
			transform: scaleY(1);
		}
	}
}
!

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