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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title><css-doodle /></title>
<meta name="keywords" content="css, web components">
<meta name="description" content="A web component for drawing patterns with CSS">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="icon" href=favicon.png type="image/png">
<link rel="stylesheet" href="lib/codemirror/style.css">
<link rel="stylesheet" href="style.css?3e7f4fb5e44596523a3cc50355b529cd">
<link rel="preconnect" href="https://cdnjs.cloudflare.com">
<link rel="preconnect" href="https://fonts.gstatic.com">
<link href="https://fonts.googleapis.com/css2?family=PT+Mono&display=swap" rel="stylesheet">
<script>(window.customElements && document.head.attachShadow) || (document.querySelector('html').className += ' oldie')</script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/css-doodle/0.39.2/css-doodle.min.js"></script>
</head>
<body>
<div class="cover">
<css-doodle use="var(--flags)"></css-doodle>
<header>
<h1>
<span class="title">
< <em>css-doodle</em> />
<a class="version" href="https://cdnjs.cloudflare.com/ajax/libs/css-doodle/0.39.2/css-doodle.min.js">v0.39.2</a>
</span>
</h1>
<p>A web component for drawing patterns with CSS</p>
<nav>
<a href="#usage">Usage β</a>
<a href="https://codepen.io/collection/XyVkpQ/">CodePen</a>
<a href="https://github.com/css-doodle/css-doodle">GitHub</a>
</nav>
</header>
<div class="wrap">
<div class="playground">
<div class="doodle" front></div>
<div class="source"></div>
<div class="switcher"></div>
</div>
</div>
</div>
<div class="docs">
<!-- intro -->
<section class="intro wrap">
<h2><a name="intro"></a>Introduction</h2>
<div class="intro-body">
<script async src="https://cdn.carbonads.com/carbon.js?serve=CE7DCKJM&placement=css-doodlecom" id="_carbonads_js"></script>
<article class="intro-content">
<p>
<em><css-doodle /> </em> is based on
<a href="https://developers.google.com/web/fundamentals/web-components/shadowdom">Shadow DOM v1</a> and
<a href="https://html.spec.whatwg.org/multipage/scripting.html#custom-elements">Custom Elements v1</a>.
You can use it on all major browsers right now without polyfills.
</p>
<p>
The component will generate a grid of divs by the rules (plain CSS) inside it.
You can easily manipulate those cells using CSS to come up with a graphic pattern or an animated graph.
</p>
<p>
<strong>The limit is the limit of CSS itself</strong>.
</p>
</article>
</div>
<div class="support">
<h3>
<css-doodle use="var(--heart)"></css-doodle>
<span>Donate</span>
<css-doodle use="var(--heart)"></css-doodle>
</h3>
<p>
Support us by becoming a <a href="https://opencollective.com/css-doodle#backer">Backer</a>
or <a href="https://opencollective.com/css-doodle#sponsors">Sponsor</a> on <a href="https://opencollective.com/css-doodle">open collective</a>.
</p>
<p class="donate">
<a href="https://opencollective.com/css-doodle#backers" target="_blank">
<img src="https://opencollective.com/css-doodle/backers.svg" alt="backers" />
</a>
</p>
</div>
</section>
<!-- getting started -->
<section class="gettting-started wrap">
<h2><a name="getting-started"></a>Getting Started</h2>
<p>
Download the <a href="https://cdnjs.cloudflare.com/ajax/libs/css-doodle/0.39.2/css-doodle.min.js">latest version</a> or include it directly from a CDN:
</p>
<p class="first-code-sample">
<textarea code>
<script src="https://cdnjs.cloudflare.com/ajax/libs/css-doodle/0.39.2/css-doodle.min.js"></script>
<css-doodle>
/* put your code here */
</css-doodle>
</textarea>
</p>
<p>You can also install it from <a href="http://npmjs.org/package/css-doodle">npm</a> and import the module in JavaScript:
<p>
<textarea code>
npm install css-doodle
/* import it */
import 'css-doodle';
</textarea>
</p>
</section>
<!-- usage -->
<section class="usage">
<div class="wrap">
<h2><a name="usage"></a>Usage</h2>
<p>
The syntax of <em>css-doodle</em> is based on CSS and provides several extra utility
functions and shorthand properties.
</p>
<ul class="nav">
<li>
<a href="#attributes">Attributes</a>
<ul>
<li><a href="#attribute-grid">grid</a></li>
<li><a href="#attribute-use">use</a></li>
<li><a href="#attribute-seed">seed</a></li>
</ul>
</li>
<li>
<a href="#selectors">Selectors</a>
<ul>
<li> <a href="#selector-:doodle">:doodle</a></li>
<li> <a href="#selector-:container">:container</a></li>
<li> <a href="#selector-@nth">@nth</a></li>
<li> <a href="#selector-@even">@even</a></li>
<li> <a href="#selector-@odd">@odd</a></li>
<li> <a href="#selector-@at">@at</a></li>
<li> <a href="#selector-@random">@random</a></li>
<li> <a href="#selector-@row">@row</a></li>
<li> <a href="#selector-@col">@col</a></li>
<li> <a href="#selector-@match">@match</a></li>
</ul>
</li>
<li>
<a href="#properties">Properties</a>
<ul>
<li> <a href="#property-@grid">@grid</a></li>
<li> <a href="#property-@use">@use</a></li>
<li> <a href="#property-@size">@size</a></li>
<li> <a href="#property-@place">@place</a></li>
<li> <a href="#property-@shape">@shape</a></li>
</ul>
</li>
<li>
<a href="#functions">Functions</a>
<ul>
<li> <a href="#function-@index">@index</a></li>
<li> <a href="#function-@row">@row</a></li>
<li> <a href="#function-@col">@col</a></li>
<li> <a href="#function-@size-row">@size-row</a></li>
<li> <a href="#function-@size-col">@size-col</a></li>
<li> <a href="#function-@size">@size</a></li>
<li> <a href="#function-@pick">@pick</a></li>
<li> <a href="#function-@pick-n">@pick-n</a></li>
<li> <a href="#function-@pick-d">@pick-d</a></li>
<li> <a href="#function-@rand">@rand</a></li>
<li> <a href="#function-@last">@last-*</a></li>
<li> <a href="#function-@repeat">@repeat</a></li>
<li> <a href="#function-@multiple">@multiple</a></li>
<li> <a href="#function-@n">@n,nx,ny,N</a></li>
<li> <a href="#function-@stripe">@stripe</a></li>
<li> <a href="#function-@svg">@svg</a></li>
<li> <a href="#function-@svg-filter">@svg-filter</a></li>
<li> <a href="#function-@Math">@<Math></a></li>
<li> <a href="#function-@calc">@calc</a></li>
<li> <a href="#function-@var">@var</a></li>
<li> <a href="#function-@hex">@hex</a></li>
<li> <a href="#function-@doodle">@doodle</a></li>
<li> <a href="#function-@shaders">@shaders</a></li>
<li> <a href="#function-@shape">@shape</a></li>
<li> <a href="#function-@plot">@plot</a></li>
</ul>
</li>
<li>
<a href="#js-api">JS API</a>
<ul>
<li> <a href="#js-api-grid">grid</a></li>
<li> <a href="#js-api-use">use</a></li>
<li> <a href="#js-api-seed">seed</a></li>
<li> <a href="#js-api-update">update</a></li>
<li> <a href="#js-api-export">export</a></li>
</ul>
</li>
</ul>
</div>
<!-- example -->
<section class="example">
<div class="container">
<css-doodle>
@grid: 18 / 100vmax / #0a0c27;
--hue: calc(180 + 1.5 * @x * @y);
background: hsl(var(--hue), 50%, 70%);
margin: -.5px;
transition: @r(.5s) ease;
clip-path: polygon(@pick(
'0 0, 100% 0, 100% 100%',
'0 0, 100% 0, 0 100%',
'0 0, 100% 100%, 0 100%',
'100% 0, 100% 100%, 0 100%'
));
</css-doodle>
</div>
<textarea code data-link="https://codepen.io/yuanchuan/pen/MWjxRrL"></textarea>
</section>
<article class="wrap attributes">
<h3><a name="attributes"></a>Attributes</h3>
<section>
<h4><a name="attribute-grid"></a><span>Grid</span></h4>
<p>
The number of rows and columns in the grid is defined by the <code>grid</code> attribute on the element,
ranged from <em>1</em> to <em>64</em>. It's default to be <em>1x1</em> when no value or 0 is given.
</p>
<p class="has-preview">
<textarea code>
<css-doodle grid="5">
:doodle {
width: 8em; height: 8em;
gap: 1px;
}
background: #60569e;
</css-doodle>
</textarea>
<css-doodle grid="5">
:doodle {
gap: 1px;
@size: 8em;
}
background: #60569e;
</css-doodle>
</p>
<p>The row or column is limited up to <em>4096</em> only when the grid is 1-dimensional: </p>
<p class="has-preview">
<textarea code>
<css-doodle grid="1x35">
:doodle {
@size: 8em 12em; /* width: 8em; height: 12em; */
gap: 1px;
}
background: #60569e;
width: @rand(5%, 100%); /* from 5% to 100% by random */
</css-doodle>
</textarea>
<css-doodle grid="1x35" click-to-update>
:doodle {
@size: 8em 12em;
gap: 1px;
}
transition: .2s ease @rand(500ms);
background: #60569e;
will-change: width;
width: @rand(5%, 100%);
</css-doodle>
</p>
<p>
The <code>n x m</code> follows the order of <em>(col, row)</em> or <em>(x, y)</em>.
The following formats of <code>grid</code> value are all recognizable:
</p>
<div class="list-items">
<ul>
<li><code>grid = "0"</code></li>
<li><code>grid = "5"</code></li>
<li><code>grid = "20"</code></li>
<li><code>grid = "5x7"</code></li>
<li><code>grid = "5 x 7"</code></li>
<li><code>grid = "5,7"</code></li>
</ul>
</div>
<p>
There's an alternative way to set up the <code>grid</code> by using the <a href="#property-@grid">@grid</a> property.
</p>
<p class="has-preview">
<textarea code>
<css-doodle>
:doodle {
@grid: 5 / 8em;
}
background: #60569e;
transform: scale(@rand(.2, .9));
</css-doodle>
</textarea>
<css-doodle grid="5" click-to-update>
:doodle {
@grid: 5;
@size: 8em;
}
background: #60569e;
transform: scale(@r(.2, .9));
</css-doodle>
</p>
</section>
<section>
<h4><a name="attribute-use"></a><span>use</span></h4>
<p>
Import rules from <a href="https://developer.mozilla.org/en-US/docs/Web/CSS/--*">CSS custom properties</a> (CSS variables).
</p>
<p class="has-preview">
<textarea code>
<style>
css-doodle {
--rule: (
@grid: 5 / 8em;
--d: @p(45deg, -45deg, 135deg, -135deg);
--lg: linear-gradient(@var(--d),#60569e 50%,#0000 0);
background:
@var(--lg) 0 0 / 100% 100%,
@var(--lg) 0 0 / 50% 50%;
);
}
</style>
<css-doodle use="var(--rule)"></css-doodle>
</textarea>
<style>
css-doodle {
--rule-use: (
@grid: 5 / 8em;
--deg: @p(45deg, -45deg, 135deg, -135deg);
--lg: linear-gradient(@var(--deg), #60569e 50%, #0000 0);
background:
@var(--lg) 0 0 / 100% 100%,
@var(--lg) 0 0 / 50% 50%;
);
}
</style>
<css-doodle click-to-update use="var(--rule-use)"></css-doodle>
</p>
<p>
It's highly recommended to write the rules this way if you want to use css-doodle in production websites.
So it won't break when the network is slow or when the browser does not support Web Component.
</p>
</section>
<section>
<h4><a name="attribute-seed"></a><span>seed</span></h4>
<p>
All random values will be regenerated to the same value as last time based on the <em>seed</em> value.
It's quite useful if you want to keep a snapshot.
</p>
<p class="has-preview">
<textarea code>
<css-doodle seed="2020">
:doodle {
@grid: 5 / 8em;
}
background: #60569e;
transform: scale(@rand(.2, .9));
</css-doodle>
</textarea>
<css-doodle seed="2020" click-to-update>
@grid: 5 / 8em;
background: #60569e;
transform: scale(@rand(.2, .9));
</css-doodle>
</p>
<p>
A random <code>seed</code> will be generated by default if you don't specify explictly, and
you can always get the generated value with <a href="#js-api-seed">JS API</a> later.
</p>
</section>
</article>
<!-- example -->
<section class="example">
<div class="container">
<css-doodle>
@grid: 1 / 100vw 100vh / #0a0c27;
background-size: 200px 200px;
background-image: @doodle(
@grid: 6 / 100%;
@size: 4px;
font-size: 4px;
color: hsl(@r240, 30%, 50%);
box-shadow: @m3x5(
calc(4em - @nx*1em) @ny(*1em)
@p(@m3(currentColor), @m2(#0000)),
calc(2em + @nx*1em) @ny(*1em)
@lp
);
);
</css-doodle>
</div>
<textarea code data-link="https://codepen.io/yuanchuan/pen/OJRqGvz"></textarea>
</section>
<article class="wrap selectors">
<h3><a name="selectors"></a>Selectors</h3>
<section>
<h4><a name="selector-:doodle"></a><span>:doodle</span></h4>
<p>
The <code>:doodle</code>
is a special selector indicates to the component element itself.
Note that the styles would be over-written by your normal CSS files outside.
<span class="tip">(try to hover on the doodle)</span>
</p>
<p class="has-preview">
<textarea code>
:doodle { --s: 0 }
:doodle(:hover) { --s: 1 }
transition: .5s cubic-bezier(.175, .885, .32, 1.275);
transition-delay: @rand(500ms);
transform: translateY(calc(var(--s) * 100%));
</textarea>
<css-doodle grid="5">
:doodle {
@grid: 5 / 8em;
--s: 0;
gap: 1px;
}
:doodle(:hover) {
--s: 1;
}
--offset: calc(var(--s) * 100%);
transform: translateY(var(--offset));
transition: .5s cubic-bezier(.175, .885, .32, 1.275);
transition-delay: @rand(500ms);
transform-origin: 50% 50%;
background: #60569e;
</css-doodle>
</p>
</section>
<section>
<h4><a name="selector-:container"></a><span>:container</span></h4>
<p>
The <code>:container</code>
is the container element that holds all the cells, which is using <a href="https://www.w3.org/TR/css-grid-1/">Grid Layout</a>.
You may want to set <code>gap</code> inside it.
</p>
<p class="has-preview">
<textarea code>
:doodle {
overflow: hidden;
}
:container {
gap: 1px;
transform: rotate(45deg) scale(1.5);
}
</textarea>
<css-doodle>
:doodle {
@grid: 8 / 8em;
overflow: hidden;
}
:container {
gap: 1px;
transform: rotate(45deg) scale(1.5);
}
background: #60569e;
</css-doodle>
</p>
<p>
It inherits all the grid properties from <code>:doodle</code> so that's why this also works:
</p>
<p class="no-preview">
<textarea code>
:doodle {
gap: 1px;
}
</textarea>
</p>
</section>
<section>
<h4><a name="selector-@nth"></a><span>@nth(n, ...)</span></h4>
<p> Select the nth cell like <code> :nth-child(n)</code> does.</p>
<p class="has-preview">
<textarea code>
/* :nth-child is still valid though */
:nth-child(1) {
background: #60569e;
}
@nth(5) {
background: #60569e;
}
@nth(3n + 8) {
background: #e6437d;
}
@nth(1, 5, 3n + 8) {
:after {
content: @index;
color: #fff;
}
}
</textarea>
<css-doodle grid="5">
:doodle {
@size: 8em;
gap: 1px;
}
background: #f5f5f5;
:nth-child(1) {
background: #60569e;
}
@nth(5) {
background: #60569e;
}
@nth(3n + 8) {
background: #e6437d;
}
@nth(1, 5, 3n + 8) {
:after {
content: @index;
font-size: .8em;
color: #fff;
}
}
</css-doodle>
</p>
</section>
<section>
<h4><a name="selector-@even"></a><span>@even</span></h4>
<p>Select cells like <code> :nth-child(even)</code> but shorter.</p>
<p class="has-preview">
<textarea code>
@even {
background: #60569e;
}
</textarea>
<css-doodle grid="5">
:doodle {
@size: 8em;
}
@even {
background: #60569e;
:after {
content: @index;
font-size: .8em;
color: #fff;
}
}
</css-doodle>
</p>
</section>
<section>
<h4><a name="selector-@odd"></a><span>@odd</span></h4>
<p>Select cells like <code> :nth-child(odd)</code>.</p>
<p class="has-preview">
<textarea code>
@odd {
background: #60569e;
}
</textarea>
<css-doodle grid="5">
:doodle {
@size: 8em;
}
@odd {
background: #60569e;
:after {
content: @index;
font-size: .8em;
color: #fff;
}
}
</css-doodle>
</p>
</section>
<section>
<h4><a name="selector-@at"></a><span>@at(col, row)</span></h4>
<p>Select cell at specific column and row.</p>
<p class="has-preview">
<textarea code>
@at(4, 2) {
background: #60569e;
}
</textarea>
<css-doodle grid="5">
:doodle {
@size: 8em;
gap: 1px;
}
background: #f5f5f5;
@at(4, 2) {
background: #60569e;
:after {
content: @x, @y;
font-size: .5em;
color: #fff;
}
}
</css-doodle>
</p>
</section>
<section>
<h4><a name="selector-@random"></a><span>@random([ ratio ])</span></h4>
<p>Select cells randomly. The <code>ratio</code> accepts value between <code>0</code> and <code>1</code>. Defaults to <code>0.5</code>.</p>
<p class="has-preview">
<textarea code>
@random {
background: #60569e;
}
</textarea>
<css-doodle grid="5" click-to-update>
:doodle {
@size: 8em;
gap: 1px;
}
background: #f5f5f5;
transition: .2s;
@random {
background: #60569e;
:after {
content: @index;
font-size: .8em;
color: #fff;
}
}
</css-doodle>
</p>
<p>The selector can be applied multiple times.</p>
<p class="has-preview">
<textarea code>
@random { border-top: 1px solid #60569e; }
@random { border-left: 1px solid #60569e; }
@random(.2) {
:after {
content: '';
background: hsl(@rand(360), 60%, 70%);
@size: @rand(3px);
}
}
</textarea>
<css-doodle click-to-update>
:doodle {
@grid: 16 / 8em;
}
margin: -.5px;
@random {
border-top: 1px solid #60569e;
}
@random {
border-left: 1px solid #60569e;
}
@random(.2) {
:after {
content: '';
background: hsl(@rand(360), 60%, 70%);
@size: @rand(3px);
}
}
</css-doodle>
</p>
</section>
<section>
<h4><a name="selector-@row"></a><span>@row(n, ...)</span></h4>
<p> Select the nth row of the grid.</p>
<p class="has-preview">
<textarea code>
@row(3) {
background: #60569e;
}
</textarea>
<css-doodle grid="5">
:doodle {
@size: 8em;
}
background: #f5f5f5;
margin: .5px;
@row(3) {
background: #60569e;
:after {
content: @row;
font-size: .8em;
color: #fff;
}
}
</css-doodle>
</p>
<p>
The <code>odd</code> and <code>even</code> is supported.
</p>
<p class="has-preview">
<textarea code>
@row(even) {
background: #60569e;
}
</textarea>
<css-doodle grid="5">
:doodle {
@size: 8em;
}
background: #f5f5f5;
margin: .5px;
@row(even) {
background: #60569e;
:after {
content: @row;
font-size: .8em;
color: #fff;
}
}
@row(even) {
:after {
content: @row;
font-size: .8em;
color: #fff;
}
}
</css-doodle>
</p>
</section>
<section>
<h4><a name="selector-@col"></a><span>@col(n, ...)</span></h4>
<p> Select the nth column of the grid.</p>
<p class="has-preview">
<textarea code>
@col(3) {
background: #60569e;
}
</textarea>
<css-doodle grid="5">
:doodle {
@size: 8em;
}
background: #f5f5f5;
margin: .5px;
@col(3) {
background: #60569e;
:after {
content: @col;
font-size: .8em;
color: #fff;
}
}
</css-doodle>
</p>
<p>
You can use <code>odd</code> and <code>even</code> too.
</p>
<p class="has-preview">
<textarea code>
@col(odd) {
background: #60569e;
}
</textarea>
<css-doodle grid="5">
:doodle {
@size: 8em;
}
background: #f5f5f5;
margin: .5px;
@col(odd) {
background: #60569e;
:after {
content: @col;
font-size: .8em;
color: #fff;
}
}
</css-doodle>
</p>
</section>
<section>
<h4><a name="selector-@match"></a><span>@match(expression)</span></h4>
<p>
Target the cells based on general Math expressions.
The variable
<code>i</code>, <code>I</code>,
<code>x</code>, <code>X</code>,
<code>y</code> and <code>Y</code> can be used without prefix <code>@</code> symbol for calculation.
</p>
<p class="has-preview">
<textarea code>
@match(i <= 8 || i >= 18) {
background: #60569e;
}
</textarea>
<css-doodle grid="5">
:doodle {
@size: 8em;
}
background: #f5f5f5;
margin: .5px;
@match(i <= 8 || i >= 18) {
background: #60569e;
:after {
content: @i;
font-size: .8em;
color: #fff;
}
}
</css-doodle>
</p>
<p>
For convenience the symbols <code>β€</code> and <code>β₯</code>
have the meanings of <code><=</code> and <code>>=</code> respectively.
</p>
<p class="has-preview">
<textarea code>
@match(x β€ y) {
background: #60569e;
}
</textarea>
<css-doodle grid="10">
:doodle {
@size: 8em;
}
background: #f5f5f5;
margin: .5px;
@match(x β€ y) {
background: #60569e;
}
</css-doodle>
</p>
<p>The equal sign can be both <code>=</code> and <code>==</code>.</p>
<p class="has-preview">
<textarea code>
@match(x = y) {
background: #60569e;
}
@match(X-x+1 == y) {
background: #60569e;
}
</textarea>
<css-doodle grid="10">
:doodle {
@size: 8em;
}
background: #f5f5f5;
margin: .5px;
@match(x = y) {
background: #60569e;
}
@match(X-x+1 == y) {
background: #60569e;
}
</css-doodle>
</p>
<p>A more complex example.</p>
<p class="has-preview">
<textarea code>
@grid: 21 / 8em;
@match(tan.cos.sin(x*y) > 1) {
background: #60569e;
}
</textarea>
<css-doodle grid="21">
:doodle {
@size: 8em;
}
background: #f5f5f5;
@match(tan.cos.sin(x*y) > 1) {
background: #60569e;
}
</css-doodle>
</p>
</section>
</article>
<section class="example hide-code">
<div class="container">
<css-doodle>
/* Fibonacci spiral */
@grid: 1 / 100vw 100vh / #125cde;
@content: @Svg(
viewBox: -50 -50 100 100 padding -20;
circle*500 {
fill: hsl(@calc(120-90*@sin.n), 80%, 50%);
r: @sqrt(@n/60);
cx: @calc(@n*.618^4 * cos(2Ο*@n*.618));
cy: @calc(@n*.618^4 * sin(2Ο*@n*.618));
}
);
</css-doodle>
</div>
<textarea code data-link="https://codepen.io/yuanchuan/pen/KKgEYBb"></textarea>
</section>
<article class="wrap properties">
<h3><a name="properties"></a>Properties</h3>
<section>
<h4><a name="property-@grid"></a><span>@grid</span></h4>
<p>This is another way to define the <code>grid</code> value and it has higher priority.</p>
<p class="has-preview">
<textarea code>
<css-doodle grid="5">
:doodle {
/* will be 3x3 instead of 5x5 */
@grid: 3x3;
@size: 8em;
}
</css-doodle>
</textarea>
<css-doodle grid="5">
:doodle {
@grid: 3 / 8em;
}
background: #60569e;
margin: .5px;
</css-doodle>
</p>
<p>Set grid and doodle size at the same time: </p>
<p class="has-preview">
<textarea code>
<css-doodle>
:doodle {
@grid: 8 / 8em;
}
</css-doodle>
</textarea>
<css-doodle grid="5">
:doodle {
@grid: 8 / 8em;
gap: 1px;
}
background: #60569e;
</css-doodle>
</p>
<p>The <code>:doodle</code> selector can be ommited if there's no other rules for it.
<p class="has-preview">
<textarea code>
<css-doodle>
@grid: 8 / 8em;
background: #60569e;
</css-doodle>
</textarea>
</p>
</section>
<section>
<h4><a name="property-@use"></a><span>@use</span></h4>
<p>Like <a href="#attribute-use">@use</a> attribute but as part of the rule.</p>
<p class="has-preview">
<textarea code>
<style>
:root {
--rule-a: (
@grid: 5 / 8em;
clip-path: circle(100% at 0 0);
);
--rule-b: (
background-image: radial-gradient(#fff 50%, #0000 0);
background-position: -25% -25%;
background-size: @r(40%, 80%) @lr();
background-repeat: no-repeat;
);
}
</style>
<css-doodle>
@use: var(--rule-a), var(--rule-b);
/* or */
@use: var(--rule-a);
@use: var(--rule-b);
/* more rules */
background-color: #60569e;
</css-doodle>
</textarea>
<style>
:root {
--rule-a: (
@grid: 5 / 8em;
clip-path: circle(100% at 0 0);
background: #60569e;
);
--rule-b: (
background-image: radial-gradient(#fff 50%, #0000 0);
background-position: -25% -25%;
background-size: @r(40%, 80%) @lr();
background-repeat: no-repeat;