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Pen Settings

CSS Base

Vendor Prefixing

Add External Stylesheets/Pens

Any URL's added here will be added as <link>s in order, and before the CSS in the editor. If you link to another Pen, it will include the CSS from that Pen. If the preprocessor matches, it will attempt to combine them before processing.

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Add External Scripts/Pens

Any URL's added here will be added as <script>s in order, and run before the JavaScript in the editor. You can use the URL of any other Pen and it will include the JavaScript from that Pen.

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Use npm Packages

We can make npm packages available for you to use in your JavaScript. We use webpack to prepare them and make them available to import. We'll also process your JavaScript with Babel.

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Code Indentation


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HTML Settings

Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

	<span class="input">
		<input type="text" placeholder="Gradient border focus fun">

              .input {
	// needs to be relative so the :focus span is positioned correctly
	// bigger font size for demo purposes
	font-size: 1.5em;
	// the border gradient
	background: linear-gradient(21deg, #10abff, #1beabd);
	// the width of the input border
	padding: 3px;
	// we want inline fields by default
	display: inline-block;
	// we want rounded corners no matter the size of the field
	border-radius: 9999em;
	// style of the actual input field
	*:not(span) {
		position: relative;
		display: inherit;
		border-radius: inherit;
		margin: 0;
		border: none;
		outline: none;
		padding: 0 .325em;
		z-index: 1; // needs to be above the :focus span
		// summon fancy shadow styles when focussed
		&:focus + span {
			opacity: 1;
			transform: scale(1);
	// we don't animate box-shadow directly as that can't be done on the GPU, only animate opacity and transform for high performance animations.
	span {
		transform: scale(.993, .94); // scale it down just a little bit
		transition: transform .5s, opacity .25s;
		opacity: 0; // is hidden by default
		z-index: 0; // needs to be below the field (would block input otherwise)
		margin:4px; // a bit bigger than .input padding, this prevents background color pixels shining through
		border-radius: inherit;
		pointer-events: none; // this allows the user to click through this element, as the shadow is rather wide it might overlap with other fields and we don't want to block those.
		// fancy shadow styles
		box-shadow: inset 0 0 0 3px #fff,
			0 0 0 4px #fff,
			3px -3px 30px #1beabd, 
			-3px 3px 30px #10abff;

html {
	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";

body {
	text-align: center;
	align-items: center;
	justify-content: center;

html, body {

input {
	font-family: inherit;

::placeholder {

html::after {
	background: linear-gradient(21deg, #10abff, #1beabd);
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