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HTML

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HTML preprocessors can make writing HTML more powerful or convenient. For instance, Markdown is designed to be easier to write and read for text documents and you could write a loop in Pug.

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Adding Classes

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Insecure Resource

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CSS

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CSS preprocessors help make authoring CSS easier. All of them offer things like variables and mixins to provide convenient abstractions.

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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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JavaScript

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JavaScript preprocessors can help make authoring JavaScript easier and more convenient.

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Babel includes JSX processing.

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HTML 

              
                <nav>jbrand</nav>
    <main>
      <article style="--index: 0;">
        <div class="article__img">
          <img src="https://picsum.photos/1920/1080?random=1" alt="">
        </div>
        <div class="article__info">
          <h2>CSS Scroll Animations</h2>
          <p>Check out this rad demo</p>
          <a href="#">Preorder</a>
        </div>
      </article>
      <article style="--index: 1;">
        <div class="article__img">
          <img src="https://picsum.photos/1920/1080?random=2" alt="">
        </div>
        <div class="article__info">
          <h2>Animate on scroll</h2>
          <p>Works with media queries too</p>
          <a href="#">Check it out</a>
        </div>
      </article>
      <article style="--index: 2;">
        <div class="article__img">
          <img src="https://picsum.photos/1920/1080?random=3" alt="">
        </div>
        <div class="article__info">
          <h2>Parallax Effects</h2>
          <p>Tweak your timings</p>
          <a href="#">Get Styling</a>
        </div>
      </article>
      <article style="--index: 3;">
        <div class="article__img">
          <img src="https://picsum.photos/1920/1080?random=4" alt="">
        </div>
        <div class="article__info">
          <h2>Drive Keyframes</h2>
          <p>CSS alone and...</p>
          <a href="#">No JavaScript</a>
        </div>
      </article>
      <article style="--index: 4;">
        <div class="article__img">
          <img src="https://picsum.photos/1920/1080?random=5" alt="">
        </div>
        <div class="article__info">
          <h2>Extra Slides</h2>
          <p>More content because...</p>
          <a href="#">CSS to the moon</a>
        </div>
      </article>
      <article style="--index: 5;">
        <div class="article__img">
          <img src="https://picsum.photos/1920/1080?random=6" alt="">
        </div>
        <div class="article__info">
          <h2>Resize Window</h2>
          <p>Try resizing the window</p>
          <a href="#">Resize</a>
        </div>
      </article>
      <article style="--index: 6;">
        <div class="article__img">
          <img src="https://picsum.photos/1920/1080?random=7" alt="">
        </div>
        <div class="article__info">
          <h2>Browser support</h2>
          <p>You'll need to be in Chrome Canary</p>
          <a href="#">Do it</a>
        </div>
      </article>
      <article style="--index: 7;">
        <div class="article__img">
          <img src="https://picsum.photos/1920/1080?random=8" alt="">
        </div>
        <div class="article__info">
          <h2>Your idea</h2>
          <p>What would you make?</p>
          <a href="#">Code</a>
        </div>
      </article>
      <article style="--index: 8;">
        <div class="article__img">
          <img src="https://picsum.photos/1920/1080?random=9" alt="">
        </div>
        <div class="article__info">
          <h2>Fork</h2>
          <p>Fork this and make it your own!</p>
          <a href="#">Duplicate</a>
        </div>
      </article>
      <article style="--index: 9;">
        <div class="article__img">
          <img src="https://picsum.photos/1920/1080?random=10" alt="">
        </div>
        <div class="article__info">
          <h2>Heart</h2>
          <p>If you like this, heart it (3x)</p>
          <a href="#">Like</a>
        </div>
      </article>
    </main>
!

CSS 

              
                *,
*:after,
*:before {
	box-sizing: border-box;	
}

:root {
	--info-size: 35vh;
}

body {
	display: grid;
	place-items: center;
	min-height: 100vh;
	font-family: ui-monospace, 'Cascadia Code', 'Source Code Pro', Menlo, Consolas, 'DejaVu Sans Mono', monospace;
	overflow: auto;
}

nav {
	position: sticky;
	top: 0;
	left: 0;
	width: 100%;
	height: 80px;
	text-align: left;
	font-weight: bold;
	font-size: 1.75rem;
	display: flex;
	align-items: center;
	background: hsl(0 0% 0%);
	color: hsl(0 0% 98%);
	padding: 0 1rem;
	z-index: 3;
}

article {
	max-width: 100vw;
	height: 100vh;
	display: grid;
	grid-template-rows: calc(100vh - var(--info-size)) var(--info-size);
	view-timeline: --article;
}

.article__img {
	position: sticky;
	top: 0;
	left: 0;
	right: 0;
	height: var(--info-size);
	animation: in-n-out both linear;
	animation-timeline: --article;
}

h2 {
	text-transform: uppercase;
	font-size: 2rem;
	margin: 0;
}

article img {
	object-fit: cover;
	width: 100%;
	height: 100%;
	height: calc(100vh - var(--info-size));
	animation: filter-out both linear;
	animation-timeline: --article;
	animation-range: exit 0% cover 100%;
}

@keyframes filter-out {
	100% {
		filter: brightness(2);
		translate: 0 -60%;
	}
}

@keyframes in-n-out {
	0%, 100% {
		opacity: 0;
	}
	10%, 60% {
		opacity: 1;
	}
}

.article__info {
	text-align: center;
	z-index: 2;
	background: hsl(0 0% 100%);
	display: grid;
	place-items: center;
	align-content: center;
	gap: 0.5rem;
	height: var(--info-size);
}

main {
	width: 100%;
}


a {
	text-transform: uppercase;
	font-weight: 600;
	color: hsl(0 0% 98%);
	background: hsl(0 0% 0%);
	padding: 1rem 2rem;
	text-decoration: none;
	word-spacing: 0.2rem;
	font-size: 1.25rem;
	border-radius: 4px;
	transition: background 0.1s;
}

a:hover {
	background: hsl(0 0% 40%);
}

@media(min-width: 768px) {
	article {
		width: 100%;
		display: grid;
		place-items: start;
		z-index: calc(var(--count, 10) - var(--index, 0));
		position: relative;
		grid-template-rows: unset;
	}
	nav {
		position: fixed;
		top: 0;
		z-index: 100;
	}
	.article__info {
		height: 100vh;
		width: 40%;
		display: grid;
		place-items: center;
		padding: 1rem;
		gap: 1rem;
		align-content: center;
	}
	.article__img {
		position: fixed;
		top: 0;
		right: 0;
		left: 40%;
		bottom: 0;
		height: 100vh;
		animation: none;
	}
  .article__img {
    animation: brighten both linear;
    animation-timeline: --article;
    animation-range: entry 0% entry 50%;
  }
	.article__img img {
		animation: clip-out both linear;
		animation-timeline: --article;
		animation-range: exit 0% exit 100%;
		height: 100%;
	}
}

@keyframes brighten {
  0% {
    filter: brightness(2);
  }
  100% {
    filter: brightness(1);
  }
}

@keyframes clip-out {
	0% {
		clip-path: inset(0 0 0 0);
	}
	100% {
    filter: brightness(0.5);
		clip-path: inset(100% 0 0 0);
	}
}
!

JS
!
999px

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