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Morphing Icon Download Button

HTML, CSS or Tailwind, and a little JavaScript. One button or a group of up to six.

By @Sapna127

Remix button

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Buttons only: no full pages, forms, cards or navigation. Put scripts in the JavaScript tab. Tailwind uses utilities from HTML and JavaScript; use complete class names. Custom CSS supports plain CSS, without @apply, imports or plugins.

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Explore freely here. Remix to publish your version with credit to the creator.

About Morphing Icon Download Button

Morphing Icon Download Button is an animated CSS button by @Sapna127. Preview the interaction, customize its HTML, styles and JavaScript, or download the files with creator credit.

Effects and categories
Hover effects, Loading, Icon, Download, Animated
Using this example
Copy the HTML or download index.html, style.css and app.js. Test keyboard focus, motion and contrast in your own project.

Usage, Tailwind and licensing questions

Read the source files

HTML

<!DOCTYPE html>
<html lang="en" >
<head>
  <meta charset="UTF-8">
  <title>Morphing Icon Download Button</title>
  <meta name="viewport" content="width=device-width, initial-scale=1, viewport-fit=cover"><link rel='stylesheet' href='https://fonts.googleapis.com/css2?family=Hind&amp;display=swap'><link rel="stylesheet" href="./style.css">

</head>
<body>
<!-- partial:index.partial.html -->
<button type="button" data-dl>
	<span class="dl-icon"></span><span>&#x44;&#x6F;&#x77;&#x6E;&#x6C;&#x6F;&#x61;&#x64;</span>
</button>
<!-- partial -->
  <script  src="./app.js"></script>

</body>
</html>

CSS


* {
	border: 0;
	box-sizing: border-box;
	margin: 0;
	padding: 0;
}
:root {
	--dur: 3s;
	--arrowA: polygon(33% 0%,67% 0%,67% 60%,100% 60%,50% 100%,0% 60%,33% 60%);
	--arrowB: polygon(0% 37.5%,100% 37.5%,100% 62.5%,100% 62.5%,50% 62.5%,0% 62.5%,0% 62.5%);
	font-size: calc(20px + (40 - 20)*(100vw - 320px)/(2560 - 320));
}
body, button {
	display: flex;
	font: 1em/1.5 Hind, sans-serif;
}
body {
	background: #e3e4e8;
	height: 100vh;
	overflow: hidden;
}
button {
	background: #255ff4;
	border-radius: 0.2em;
	color: #fff;
	cursor: pointer;
	display: flex;
	margin: auto;
	padding: 0.5em 1em;
	position: relative;
	transition: background 0.15s linear;
	width: 10.5em;
	-webkit-appearance: none;
	-moz-appearance: none;
	appearance: none;
	-webkit-tap-highlight-color: transparent;
}
button:focus {
	outline: transparent;
}
button::-moz-focus-inner {
	border: 0;
}
button:not(:disabled):focus, button:not(:disabled):hover {
	background: #0b46da;
}
button:not(:disabled):active {
	transform: translateY(1px);
}
button:disabled {
	cursor: not-allowed;
}
button span, button:before, button:after {
	display: inline-block;
	pointer-events: none;
}
button:before, button:after {
	border-radius: 0.25em;
	opacity: 0;
	top: 1em;
	left: 1.3em;
	height: 0.5em;
	transform-origin: 0.25em 50%;
	z-index: 2;
}
button:before {
	transform: rotate(-180deg);
	width: 0.8em;
}
button:after {
	width: 1.2em;
}
button:before, button:after, .dl-icon:before, .dl-icon:after {
	content: "";
	display: block;
	position: absolute;
}
button:before, button:after, .dl-icon:before {
	background: currentColor;
}
button span + span {
	margin: auto;
}
.dl-icon {
	margin-right: 0.5em;
	position: relative;
	width: 1.5em;
	height: 1.5em;
}
.dl-icon:before {
	clip-path: var(--arrowA);
	-webkit-clip-path: var(--arrowA);
	top: 0;
	left: calc(50% - 0.55em);
	transform-origin: 50% 100%;
	width: 1.1em;
	height: 1em;
	z-index: 1;
}
.dl-icon:after {
	background-image: linear-gradient(#0b46da,#0b46da);
	background-position: -1.5em 0;
	background-size: 100% 100%;
	background-repeat: no-repeat;
	box-shadow:
		0.25em 0 0 inset,
		-0.25em 0 0 inset,
		0 -0.25em 0 inset;
	bottom: 0;
	width: 100%;
	height: 0.5em;
}
.dl-working:before {
	animation: checkOutA var(--dur) linear forwards;
}
.dl-working:after {
	animation: checkOutB var(--dur) linear forwards;
}
.dl-working .dl-icon {
	animation: impact var(--dur) linear forwards;
}
.dl-working .dl-icon:before {
	animation: arrowToBar var(--dur) linear forwards;
}
.dl-working .dl-icon:after {
	animation: trayToBar var(--dur) linear forwards;
}

/* Animation */
@keyframes impact {
	from, 15% {
		transform: translateY(0);
	}
	17.5% {
		transform: translateY(0.25em);
	}
	20%, to {
		transform: translateY(0);
	}
}
@keyframes arrowToBar {
	from {
		clip-path: var(--arrowA);
		-webkit-clip-path: var(--arrowA);
	}
	10% {
		clip-path: var(--arrowB);
		-webkit-clip-path: var(--arrowB);
		transform: translateY(0);
	}
	15% {
		clip-path: var(--arrowB);
		-webkit-clip-path: var(--arrowB);
		transform: translateY(0.625em);
	}
	30% {
		clip-path: var(--arrowB);
		-webkit-clip-path: var(--arrowB);
		opacity: 1;
		transform: translateY(0.125em);
	}
	35%, to {
		clip-path: var(--arrowB);
		-webkit-clip-path: var(--arrowB);
		opacity: 0;
		transform: translateY(0.125em);
	}
}
@keyframes trayToBar {
	from, 15% {
		background-color: transparent;
		border-radius: 0;
		box-shadow:
			0.25em 0 0 inset,
			-0.25em 0 0 inset,
			0 -0.25em 0 inset;
		transform: translateY(0);
	}
	15.1% {
		background-color: currentColor;
		border-radius: 0;
		box-shadow:
			0 0 0 inset,
			0 0 0 inset,
			0 0 0 0.1em inset;
		transform: translateY(0);
	}
	30% {
		background-color: currentColor;
		background-position: -1.5em 0;
		border-radius: 0.25em;
		box-shadow:
			0 0 0 inset,
			0 0 0 inset,
			0 0 0 0.1em inset;
		transform: translateY(-0.5em);
	}
	90% {
		background-color: currentColor;
		background-position: 0 0;
		border-radius: 0.25em;
		box-shadow:
			0 0 0 inset,
			0 0 0 inset,
			0 0 0 0.1em inset;
		opacity: 1;
		transform: translateY(-0.5em);
	}
	90.1%, to {
		background-color: currentColor;
		background-position: 0 0;
		border-radius: 0.25em;
		box-shadow:
			0 0 0 inset,
			0 0 0 inset,
			0 0 0 0.1em inset;
		opacity: 0;
		transform: translateY(-0.5em);
	}
}
@keyframes checkOutA {
	from, 90% {
		opacity: 0;
		transform: translate(0,0) rotate(-180deg);
	}
	90.1% {
		opacity: 1;
		width: 0.8em;
		transform: translate(0,0) rotate(-180deg);
	}
	92.5% {
		opacity: 1;
		width: 1em;
		transform: translate(0,0.5em) rotate(-120deg);
	}
	95%, to {
		opacity: 1;
		width: 1em;
		transform: translate(0,0.375em) rotate(-135deg);
	}
}
@keyframes checkOutB {
	from, 90% {
		opacity: 0;
		transform: translate(0,0) rotate(0);
	}
	90.1% {
		opacity: 1;
		width: 1.2em;
		transform: translate(0,0) rotate(0);
	}
	92.5% {
		opacity: 1;
		width: 1.6em;
		transform: translate(0,0.5em) rotate(-60deg);
	}
	95%, to {
		opacity: 1;
		width: 1.6em;
		transform: translate(0,0.375em) rotate(-45deg);
	}
}

/* Dark mode */
@media (prefers-color-scheme: dark) {
	body {
		background: #2e3138;
	}
}

JavaScript

document.addEventListener("DOMContentLoaded",function(){
	this.addEventListener("click",e => {
		let tar = e.target;
		if (tar.hasAttribute("data-dl")) {
			let dlClass = "dl-working";
			if (!tar.classList.contains(dlClass)) {
				let lastSpan = tar.querySelector("span:last-child"),
					lastSpanText = lastSpan.textContent,
					timeout = getMSFromProperty("--dur",":root");

				tar.classList.add(dlClass);
				lastSpan.textContent = "Downloading…";
				tar.disabled = true;

				setTimeout(() => {
					lastSpan.textContent = "Completed!";
				},timeout * 0.9);

				setTimeout(() => {
					tar.classList.remove(dlClass);
					lastSpan.textContent = lastSpanText;
					tar.disabled = false;
				},timeout + 1e3);
			}
		}
	});
});
function getMSFromProperty(property,selector) {
	let cs = window.getComputedStyle(document.querySelector(selector)),
		transDur = cs.getPropertyValue(property),
		msLabelPos = transDur.indexOf("ms"),
		sLabelPos = transDur.indexOf("s");

	if (msLabelPos > -1)
		return transDur.substr(0,msLabelPos);
	else if (sLabelPos > -1)
		return transDur.substr(0,sLabelPos) * 1e3;
}