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HTML

Adding Classes

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CSS

CSS Base

About CSS Base

It's a common practice to apply CSS to a page that styles elements such that they are consistent across all browsers. We offer two of the most popular choices: normalize.css and a reset. Or, choose Neither and nothing will be applied.

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You can also link to another Pen here, and we'll pull the JavaScript from that Pen and include it. If it's using a matching preprocessor, we'll combine the code before preprocessing, so you can use the linked Pen as a true dependency.

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Vue 

              
                <template>
	<div class="page">
		<nav class="page-nav">
			<div
				class="page-nav__item"
				v-for="nav in pages"
				:class="{ '-active': active === nav }"
				@click="move(nav)"
			>
				<span>{{ nav }}</span> <sup></sup>
			</div>
		</nav>

		<transition
			name="page-transition"
			:enter-active-class="'page-transition-enter-active ' + directionClass"
			:leave-active-class="'page-transition-leave-active ' + directionClass"
		>
			<div
				class="page-content"
				:class="[active.toLowerCase()]"
				:is="'page' + active"
				:name="active"
			></div>
		</transition>

		<p class="page-notes">
			<u>Navigation</u>: Click the navigation or you can use up and down from
			keyboard. Also keypad works.
		</p>
	</div>
</template>

<script>
var pageTemplate = {
	props: ["name"],
	template: `
		<section>{{name}}</section>
	`
};

export default {
	components: {
		pageOne: pageTemplate,
		pageTwo: pageTemplate,
		pageThree: pageTemplate,
		pageFour: pageTemplate
	},
	data() {
		return {
			pages: ["One", "Two", "Three", "Four"],
			active: "One",
			directionClass: "-next"
		};
	},
	mounted() {
		document.addEventListener("keyup", this.navigation);
	},
	methods: {
		direction(nav) {
			let vm = this;
			let currentIndex = vm.pages.findIndex((item) => item == vm.active);
			let nextIndex = vm.pages.findIndex((item) => item == nav);
			return currentIndex < nextIndex ? "-next" : "-previous";
		},
		move(nav) {
			this.directionClass = this.direction(nav);
			this.active = nav;
		},
		navigation(event) {
			let vm = this;
			let length = vm.pages.length;
			let currentIndex = vm.pages.findIndex((item) => item == vm.active);

			if (currentIndex > 0 && event.keyCode == 38) {
				vm.move(vm.pages[currentIndex - 1]);
			}

			if (currentIndex < length - 1 && event.keyCode == 40) {
				vm.move(vm.pages[currentIndex + 1]);
			}

			if (
				(event.keyCode >= 48 && event.keyCode <= 57) ||
				(event.keyCode >= 96 && event.keyCode <= 105)
			) {
				if (parseInt(event.key) <= length) {
					let key = parseInt(event.key) === 0 ? 1 : event.key;
					vm.move(vm.pages[key - 1]);
				}
			}
		}
	}
};
</script>

<style lang="scss">
*,
*:before,
*:after {
	box-sizing: border-box;
}

:root {
	--rem: 18px;
	counter-reset: nav;
}

html,
body {
	all: initial;
	box-sizing: border-box;

	margin: 0;
	padding: 0;
	width: 100vw;
	min-height: 100vh;

	display: flex;
	flex-direction: column;
	justify-content: stretch;
	align-items: stretch;

	background-color: white;

	font-family: "Spartan", sans-serif;
	font-variation-settings: "wght" 400;
	font-size: var(--rem);
}

.page {
	flex-grow: 1;

	perspective: 1200px;
	overflow: hidden;

	position: relative;
	display: flex;
	flex-direction: column;
	justify-content: flex-start;
	align-items: stretch;

	&-nav {
		flex-grow: 0;
		position: absolute;
		left: 50%;
		top: 80%;
		transform: translate(-50%, -80%);
		display: flex;
		flex-direction: row;
		justify-content: center;
		align-items: center;
		z-index: 40;

		&__item {
			margin: 0 6px;
			min-width: 65px;
			color: white;
			font-family: "Spartan", sans-serif;
			font-variation-settings: "wght" 400;

			text-decoration: none;
			text-align: center;
			white-space: nowrap;

			cursor: pointer;
			transition: font-weight 0.45s ease-out;

			& sup:after {
				counter-increment: nav;
				content: "(" counter(nav) ")";
				font-size: 0.6rem;
				font-variation-settings: "wght" 400;
				line-height: 0.8rem;
			}

			&:hover {
				font-variation-settings: "wght" 500;
			}

			&.-active span {
				text-decoration: underline;
				font-variation-settings: "wght" 500;
			}
		}
	}

	&-content {
		position: absolute;
		top: 0;
		left: 0;

		width: 100%;
		height: 100%;

		flex-grow: 1;
		display: flex;
		flex-direction: column;
		justify-content: center;
		align-items: center;
		background-color: white;

		font-family: "Spartan", sans-serif;
		font-variation-settings: "wght" 900;
		font-size: 20vw;
		letter-spacing: 2.2vw;
		text-transform: uppercase;

		&.one {
			background-color: rgb(94, 80, 142);
			color: rgba(255, 225, 255, 0.2);
		}
		&.two {
			background-color: rgb(178, 202, 200);
			color: rgba(255, 225, 255, 0.6);
		}
		&.three {
			background-color: rgb(203, 192, 211);
			color: rgba(255, 225, 255, 0.6);
		}
		&.four {
			background-color: rgb(255, 214, 186);
			color: rgba(255, 225, 255, 0.8);
		}
	}

	&-notes {
		position: absolute;
		bottom: 20px;
		right: 20px;

		margin: 0;
		padding: 10px;

		width: 320px;

		border-radius: 8px;
		color: white;
		font-size: 0.6rem;
		font-variation-settings: "wght" 400;
		line-height: 0.8rem;

		background-color: rgba(0, 0, 0, 0.6);
	}

	&-transition {
		$transition: &;
		&-leave {
			z-index: 20;
			&-active {
				&.-next {
					animation: slideOutUp 1s both ease;
					& ~ #{$transition}-enter-active {
						animation: slideInUp 1s both ease;
					}
				}
				&.-previous {
					animation: slideOutDown 1s both ease;
					& ~ #{$transition}-enter-active {
						animation: slideInDown 1s both ease;
					}
				}
			}
		}
	}
}

@keyframes slideOutUp {
	25% {
		opacity: 0.6;
		transform: translateZ(-100px);
		border-radius: 20px;
		font-variation-settings: "wght" 400;
		font-size: 16vw;
	}
	75% {
		opacity: 0.6;
		transform: translateZ(-100px) translateY(-200%);
		border-radius: 20px;
	}
	100% {
		opacity: 0.6;
		transform: translateZ(-100px) translateY(-200%);
	}
}

@keyframes slideInUp {
	0%,
	25% {
		opacity: 0.6;
		transform: translateZ(-100px) translateY(200%);
		border-radius: 20px;
		font-variation-settings: "wght" 400;
		font-size: 16vw;
	}
	75% {
		opacity: 0.6;
		transform: translateZ(-100px);
		border-radius: 20px;
	}
	100% {
		opacity: 1;
		transform: translateZ(0) translateX(0);
	}
}

@keyframes slideOutDown {
	25% {
		opacity: 0.6;
		transform: translateZ(-100px);
		border-radius: 20px;
		font-variation-settings: "wght" 400;
		font-size: 16vw;
	}
	75% {
		opacity: 0.6;
		transform: translateZ(-100px) translateY(200%);
		border-radius: 20px;
	}
	100% {
		opacity: 0.6;
		transform: translateZ(-100px) translateY(200%);
	}
}

@keyframes slideInDown {
	0%,
	25% {
		opacity: 0.6;
		transform: translateZ(-100px) translateY(-200%);
		border-radius: 20px;
		font-variation-settings: "wght" 400;
		font-size: 16vw;
	}
	75% {
		opacity: 0.6;
		transform: translateZ(-100px);
		border-radius: 20px;
	}
	100% {
		opacity: 1;
		transform: translateZ(0) translateX(0);
	}
}
</style>
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999px

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