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HTML

              
                <input type="checkbox" />
<div class="burger">
	<div></div>
</div>
<div id="wrap">
	<h1><span>Bertie's</span><strong>Big</strong><span>Burgers</span></h1>
	<nav class="menu">
		<ul>
			<li>Locations & Hours
				<ul>
					<li>New York City</li>
					<li>Chicago</li>
					<li>San Francisco</li>
					<li>Los Angeles</li>
					<li>Philadelphia</li>
					<li>Toronto</li>
					<li>Vancouver</li>
				</ul>
			</li>
			<li>Menu
				<ul>
					<li>Burgers
						<ul>
							<li>The Big Cheese</li>
							<li>The Big Veg</li>
							<li>The Double Big-Big</li>
							<li>The Big Boss</li>
							<li>The Little Big</li>
						</ul>
					</li>
					<li>Fries
						<ul>
							<li>Classic Fries</li>
							<li>Seasoned Fries</li>
							<li>Curly Fries</li>
							<li>Tater Tots</li>
						</ul>
					</li>
					<li>Salads
						<ul>
							<li>The Big 'Burg</li>
							<li>The Big Ceasar</li>
							<li>The Giant Garden</li>
						</ul>
					</li>
					<li>Shakes
						<ul>
							<li>Big Vanilla</li>
							<li>Big Chocolate</li>
							<li>Big Strawberry</li>
							<li>Big Cookies & Creme</li>
						</ul>
					</li>
				</ul>
			</li>
			<li>Takeout & Delivery</li>
			<li>Catering</li>
			<li>Join the Big Burger Club</li>
		</ul>
	</nav>
	<section class="article">
		<div>
			<img src="https://assets.codepen.io/t-1/lefteris-kallergis-_TLKIVSW6Do-unsplash.jpg" alt="a vegetarian burger with a quinoa patty and lots of vegetable fixins.">
			<!-- photo by Lefteris kallergis for Unsplash. Full-size image at: https://unsplash.com/photos/_TLKIVSW6Do -->
			<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Qui dicta minus molestiae vel beatae natus eveniet ratione temporibus aperiam harum alias officiis assumenda officia quibusdam deleniti eos cupiditate dolore doloribus!</br></br>Ad dolore dignissimos asperiores dicta facere optio quod commodi nam tempore recusandae. Rerum sed nulla eum vero expedita ex delectus voluptates rem at neque quos facere sequi unde optio aliquam!</p>
		</div>
		<div>
			<img src="https://assets.codepen.io/t-1/jay-gajjar-vsYCZVef28E.jpg" alt="french fries seasoned with garlic and spices in a brown craft paper container. ">
			<!-- photo by Jay Gajjar for Unsplash. Full-size image at: https://unsplash.com/photos/vsYCZVef28E -->
			<p>Tenetur quod quidem in voluptatem corporis dolorum dicta sit pariatur porro quaerat autem ipsam odit quam beatae tempora quibusdam illum! Modi velit odio nam nulla unde amet odit pariatur at!</p>
		</div>
		<div>
			<img src="https://assets.codepen.io/t-1/melissa-walker-horn-NkwNp3ho-Qw-unsplash.jpg" alt="a burger, fries, and a beer on a restaurant table. ">
			<!-- photo by Melissa Walker Horn for Unsplash. Full size image at: https://unsplash.com/photos/NkwNp3ho-Qw -->
			<p>Consequatur rerum amet fuga expedita sunt et tempora saepe? Iusto nihil explicabo perferendis quos provident delectus ducimus necessitatibus reiciendis optio tempora unde earum doloremque commodi laudantium ad nulla vel odio?</p>
		</div>
	</section>
</div>
              
            
!

CSS

              
                @import url("https://fonts.googleapis.com/css2?family=Oswald:wght@400;600&display=swap");

@font-face {
	font-family: "Bogart";
	src: url("https://assets.codepen.io/383755/bogart-semibold.woff2")
		format("woff");
}

html {
	padding: 0;
	margin: 0;
}

body {
	font-family: "Oswald";
	--bl: #342935;
	--p: #b161c7;
	--r: #fd6262;
	--b: #55c6d9;
	--y: #fccf08;
	--w: #f2fdff;
	--bl: #322d2f;
	--b: #dd6235;
	--y: #cbaf69;
	--r: #dd6235;
	padding: 0;
	margin: 0;
	--expo: cubic-bezier(1, 0, 0, 1);
	--elastic: cubic-bezier(0.375, 0.885, 0.32, 1.125);
	background: var(--w);
	#wrap {
		perspective: 80vmin;
		perspective-origin: 50% 0vh;
		position: fixed;
		overflow: hidden;
		height: 100vh;
	}
	* {
		box-sizing: border-box;
		transform-style: preserve-3d;
		backface-visibility: hidden;
	}
	input,
	.burger {
		cursor: pointer;
		transform: scale(0.5) translateZ(10vmin);
	}
	input,
	.burger {
		position: fixed;
		top: 0vmin;
		right: 3vmin;
		z-index: 20;
		width: 7vmin;
		height: 7vmin;
		opacity: 0;
		&:hover {
			& ~ .burger {
				> div {
					background-position: 50% 50%;
					transition: background-position 0.3s var(--expo) 0s;
					&:before,
					&:after {
						background-position: 100% 50%;
					}
				}
			}
		}
		&:checked {
			& ~ .burger {
				background: var(--bl);
				box-shadow: 0 0 0 2vmin var(--bl);
				transition: 0s ease-in-out 1.25s, box-shadow 0.5s var(--expo) 1.25s;
				> div {
					background-position: 100% 50%;
					transition: background-position 0.3s var(--expo) 0s;
					&:before,
					&:after {
						background: var(--y);
						transform: translate(1vmin, 5.25vmin) rotate(-45deg);
						transition: transform 0.4s var(--elastic) 0.75s,
							background 0.75s ease-in-out;
					}
					&:after {
						transform: translate(-1vmin, 0vmin) rotate(45deg);
					}
				}
			}
			& ~ #wrap {
				nav {
					> ul {
						padding: 6vmin 6vmin;
						box-shadow: inset 0 0 0 calc(6vmin - 2px) var(--bl),
							inset 0 0 0 6vmin var(--w);
						transition: 2s ease-in-out 0s;
						> li {
							padding: 1vmin 3vmin;
						}
					}
				}
				section,
				nav {
					transition: transform 0.75s var(--expo) 0.5s;
					div {
						img {
							box-shadow: 0 0 0 -1vmin var(--w), 0 0 0 calc(-1vmin + 1px) var(--y),
								0 5vmin 10vmin -15vmin var(--bl);
							filter: saturate(0) blur(4px);
							opacity: 0;
							transition: 0.3s var(--expo) 0s, opacity 0.5s ease-in-out 0.3s;
						}
						p {
							transition: transform 0.3s var(--expo) 0.3s;
							transform-origin: top;
							transform: scaleY(0);
							&:before {
								transition: transform 0.3s var(--expo) 0s;
								transform-origin: bottom;
								transform: scaleY(1);
							}
							&:after {
								transition: transform 0.5s var(--expo) 0s,
									background-size 0.5s var(--expo) 0s;
								transform: scaleX(0);
								background-size: 0vmin 0vmin, 100% 2px;
							}
						}
					}
					> ul {
						> li {
							&:after {
								transition: transform 0.5s var(--expo) 1.75s;
								transform: scaleX(1);
							}
						}
						li {
							transform: rotateX(0deg) translateZ(0px);
							&:before {
								transform: scaleX(1);
								transition: transform 1s var(--expo);
							}

							@for $i from 1 through 20 {
								&:nth-of-type(#{$i}) {
									transition: 0.2s ease-in-out,
										transform 0.75s var(--expo) #{$i/15 + 0.75}s;
									&:before {
										transition-delay: #{$i/15 + 1.5}s;
									}
								}
							}
						}
					}
				}
				section {
					transform: translateX(-100vw) rotateY(-65deg) skewY(0deg) scaleX(2)
						scaleY(7) translateZ(0px);
					will-change: transform;
				}
				h1 {
					transform: translateX(-50%) scaleY(7) translateY(-150%) translateZ(0px);
					transition: transform 0.3s var(--expo) 0.15s;
					&:before {
						background-position: 50% 100%;
						transition: background-position 0.3s var(--expo) 0.05s;
					}
					span {
						&:first-of-type {
							transform: translateX(35%);
						}
						&:last-of-type {
							transform: translateX(-35%);
						}
					}
					strong {
						transform: scaleY(10) translateY(-10vmin);
					}
				}
				nav {
					transform: rotateX(0deg) translateX(0) skewY(0deg);
				}
			}
		}
	}
	.burger {
		pointer-events: none;
		opacity: 1;
		transition: 0s ease-in-out;
		> div {
			position: absolute;
			width: 100%;
			height: 1vmin;
			background: linear-gradient(
				to left,
				var(--bl) 33%,
				var(--r) 33%,
				var(--r) 66%,
				rgba(255, 255, 255, 0.0001) 66%
			);
			background-size: 300% 100%;
			background-position: 100% 50%;
			border-radius: 10vmin;
			top: 50%;
			transform: translateY(-50%);
			transition: background-position 0.3s var(--expo);
			&:before,
			&:after {
				content: "";
				position: absolute;
				width: 100%;
				height: 100%;
				background: linear-gradient(to right, var(--bl) 50%, var(--r) 50%);
				background-size: 200% 100%;
				background-position: 0% 50%;
				border-radius: inherit;
				top: -2.5vmin;
				transition: transform 0.4s ease-in-out 0s,
					background-position 0.3s var(--expo);
				transform-origin: 0% 0%;
			}
			&:after {
				top: 2.5vmin;
				transform-origin: 100% 100%;
			}
		}
	}
	h1 {
		position: fixed;
		top: 0;
		left: 50%;
		z-index: 2;
		font-family: "Bogart";
		font-size: 4vmin;
		margin: 0;
		padding-left: 6vmin;
		width: 100vw;
		text-align: left;
		transform: translateX(-50%) translateZ(0px);
		transition: transform 0.5s var(--expo) 0.75s;
		transform-origin: bottom;
		strong,
		span {
			display: inline-block;
		}
		span {
			transition: 0.75s var(--expo) 1s;
			color: var(--bl);
		}
		strong {
			vertical-align: middle;
			font-size: 6vmin;
			text-transform: uppercase;
			margin: 0 0.5vmin;
			transform-origin: bottom;
			transition: 0.5s var(--elastic) 1.25s;
			color: var(--r);
		}
		&:before {
			content: "";
			position: absolute;
			width: 100vw;
			height: 150%;
			top: 0;
			left: 50%;
			transform: translateX(-50%) translateZ(0px);
			z-index: -2;
			background: linear-gradient(
				to bottom,
				var(--w),
				rgba(255, 255, 255, 0.0001)
			);
		}
	}
	nav,
	section,
	h1 {
		backface-visibility: hidden;
	}
	h1,
	section {
		display: inline-block;
		transform-origin: top right;
		will-change: transform;
	}
	section {
		padding: 10vmin 12vmin 8vmin;
		background: radial-gradient(
				circle at center,
				var(--r) 0.5px,
				var(--w) 0.5px,
				var(--w) 5px
			)
			50% 50% / 5px 5px repeat;
		color: var(--w);
		overflow: scroll;
		height: 100vh;
		transform: translateZ(0px);
		box-shadow: 10vmin 0 0 var(--r);
		div {
			width: 100%;
			display: flex;
			justify-content: space-between;
			align-items: center;
			padding: 15vmin 0;
			position: relative;
			--x: 10vmin;
			img,
			p {
				width: 50%;
				position: relative;
			}
			img {
				transform: scale(1.25) translateX(var(--x));
				filter: saturate(1) blur(0px);
				box-shadow: 0 0 0 2.5vmin var(--w), 0 0 0 calc(2.5vmin + 1px) var(--y),
					0 5vmin 10vmin -5vmin var(--bl);
				opacity: 1;
			}
			p {
				font-size: 2.25vmin;
				margin: 0;
				z-index: 2;
				background: var(--w);
				color: var(--bl);
				padding: 2rem;
				position: relative;
				transform: scaleY(1);
				transform-origin: bottom;
				box-shadow: 0 5vmin 10vmin -7.5vmin var(--bl);
				&:before {
					content: "";
					position: absolute;
					width: 100%;
					height: 100%;
					z-index: 2;
					background: var(--r);
					transform-origin: top;
					top: 0;
					left: 0;
					transform: scaleY(0);
				}
				&:after {
					content: "";
					position: absolute;
					height: 5vmin;
					width: 25%;
					right: 100%;
					background: radial-gradient(
							circle at center,
							var(--r) 1vmin,
							rgba(255, 255, 255, 0.001) 1vmin
						),
						linear-gradient(to right, var(--r), var(--w));
					background-size: 2vmin 2vmin, 100% 2px;
					background-repeat: no-repeat;
					background-position: 0px 50%, 50% 50%;
					top: calc(50% - 2.5vmin);
					transform-origin: right;
				}
			}
			&:nth-of-type(even) {
				flex-direction: row-reverse;
				--x: -10vmin;
				p {
					&:after {
						right: auto;
						left: 100%;
						transform-origin: left;
					}
				}
			}
			@for $i from 1 through 3 {
				&:nth-of-type(#{$i}) {
					img {
						transition: 0.5s var(--expo) #{$i/10 + 1.5}s, opacity 2s ease-in-out 0s;
					}
					p {
						transition: transform 0.5s var(--expo) #{$i/10 + 1}s;
					}
					p:before,
					p:after {
						transition: transform 0.5s var(--expo) #{$i/10 + 1.5}s,
							background-size 0.75s var(--expo) #{$i/10 + 2}s;
					}
				}
			}
		}
	}
	section,
	nav {
		transition: transform 0.75s var(--expo) 0s;
	}
	nav {
		width: 100vw;
		height: 100vh;
		position: fixed;
		top: 0;
		left: 0;
		z-index: 9;
		background: var(--bl);
		color: var(--w);
		padding: 0;
		transform: translateX(100vw) rotateY(65deg) skewY(60deg) scaleY(7)
			translateZ(0px);
		transform-origin: 50% left;
		overflow: hidden;
		ul {
			list-style-type: none;
			padding: 0;
			transform: translateZ(0px);
			position: relative;
			overflow: hidden;
		}
		> ul {
			display: grid;
			grid-template-columns: repeat(3, 1fr);
			grid-template-rows: repeat(8, 1fr);
			grid-column-gap: 0px;
			grid-row-gap: 0px;
			height: 100vh;
			margin: 0;
			transform: translateZ(0px);
			transition: 0.5s var(--expo);
			box-shadow: inset 0 0 0 calc(-1vmin - 1px) var(--bl),
				inset 0 0 0 calc(-1vmin + 1px) var(--w);
			li {
				padding: 1vmin;
				transform: translateY(75vh) translateZ(0px);
				backface-visibility: hidden;
				will-change: transform;
				transition: 1s var(--expo);
				overflow: hidden;
			}
			> li {
				box-sizing: border-box;
				transform: translateY(100vh) translateZ(0px);
				&:first-of-type {
					grid-area: 1 / 1 / 2 / 4;
					font-size: 3.5vmin;
					position: relative;
					&:after {
						content: "";
						position: absolute;
						width: calc(100% - 4vmin);
						height: 1px;
						bottom: 0;
						left: 2vmin;
						background: var(--r);
						transition: transform 0.5s var(--expo);
						transform: scaleX(0);
					}
					ul {
						display: flex;
						justify-content: space-between;
						position: relative;
						overflow: hidden;
						padding-bottom: 0;
						> li {
							color: var(--w);
							transform: translateY(100vh);
							cursor: pointer;
							text-align: center;
							flex-grow: 1;
							overflow: visible;
							margin-top: -1vmin;
							&:hover {
								color: var(--r);
								&:after {
									transform: translateY(0);
								}
							}
							&:before {
								content: "";
								position: absolute;
								width: 1px;
								height: 50%;
								right: 0;
								top: calc(50% - 1vmin);
								background: var(--r);
								transform-origin: bottom;
								transform: scaleY(0);
							}
							&:after {
								content: "📍";
								position: absolute;
								left: 1rem;
								filter: saturate(0) brightness(2);
								transition: 0.3s ease-in-out;
								transform: translateY(250%);
								display: inline-block;
							}
							&:last-of-type {
								&:before {
									display: none;
								}
							}
						}
					}
				}
				&:nth-of-type(2) {
					grid-area: 2 / 1 / 8 / 4;
					display: flex;
					flex-wrap: nowrap;
					flex-direction: column;
					align-items: stretch;
					max-width: 100%;
					font-family: "Bogart";
					color: var(--y);
					font-size: 5vmin;
					> ul {
						> li {
							position: relative;
							overflow: hidden;
							margin-right: 1.5vmin;
							&:nth-of-type(even) {
								margin-right: 0;
								margin-left: 1.5vmin;
							}
						}
					}
					ul {
						display: grid;
						grid-template-columns: repeat(2, 1fr);
						grid-template-rows: repeat(2, 1fr);
						width: 100%;
						font-family: "Bogart";
						flex-grow: 2;
						color: var(--r);
						> li {
							font-family: "Bogart";
							font-size: 3vmin;
							padding-left: 0;
							position: relative;
							&:before {
								content: "";
								position: absolute;
								width: calc(100% - 12.5vmin);
								right: 0;
								height: 1px;
								background: var(--w);
								top: 3.25vmin;
								transition: transform 0.5s var(--expo) 0s;
								transform-origin: left;
								transform: scaleX(0);
							}
							&:nth-of-type(2) {
								> ul li {
									&:after {
										content: "🍟";
									}
								}
							}
							&:nth-of-type(3) {
								> ul li {
									&:after {
										content: "🥬";
									}
								}
							}
							&:nth-of-type(4) {
								> ul li {
									&:after {
										content: "🥤";
									}
								}
							}
							> ul {
								li {
									font-size: 2vmin;
									color: var(--w);
									font-family: "Oswald";
									cursor: pointer;
									text-align: right;
									&:after {
										content: "🍔";
										margin-left: 0vmin;
										display: inline-block;
										filter: saturate(0);
										transition: 0.3s ease-in-out;
										transform: translateY(-250%) scale(1.25);
									}
									&:hover {
										color: var(--r);
										&:after {
											margin-left: 2.5vmin;
											transform: translateY(0) scale(1.5);
										}
										& + li + li {
											&:after {
												transform: translateY(250%) scale(1.25);
											}
										}
									}
									&:before {
										display: none;
									}
								}
							}
						}
					}
					& ~ li {
						display: flex;
						justify-content: center;
						align-items: center;
						color: var(--bl);
						transform-style: preserve-3d;
						transform: translateY(100vh) translateZ(0px);
						cursor: pointer;
						box-shadow: inset 0 0 0 2px var(--bl);
						background: linear-gradient(to bottom, var(--r) 50%, var(--y) 50%);
						background-size: 100% 200%;
						background-position: 50% 0px;
						&:hover {
							background-position: 50% 100%;
						}
						&:nth-of-type(even) {
							background: linear-gradient(to top, var(--r) 50%, var(--y) 50%);
							background-size: 100% 200%;
							background-position: 50% 100%;
							&:hover {
								background-position: 50% 0px;
							}
						}
					}
				}
			}
		}
		> ul > li {
			font-family: "Bogart";
			font-size: 2.5vmin;
			position: relative;
			color: var(--y);
			ul {
				font-family: "Oswald";
				font-size: 2vmin;
			}
		}
	}
}

              
            
!

JS

              
                /*** nada nada limonada ***/

              
            
!
999px

Console