PatternFly Elements
Get started
Quick start
If you'd like to start exploring PatternFly Elements right away, checkout our Quick start demo page.
Install PatternFly Elements
Depending on the tool you use to manage dependencies (npm, yarn, etc.) use the command line to install the components you’d like as a dependency of your project like this:
npm install --save @patternfly/elementsThis will install not only the pf-card, but also the core utilities and styles, and will save it to your package.json.
Include PatternFly Elements JavaScript
There are a few options for including PatternFly Elements into your site or app.
In HTML
You may load the JavaScript via <script type="module">. List out all the
components you may include on your page, and the browser will fetch the
dependencies dynamically on load.
Learn more about JavaScript modules.
In this example, we load the card modules from JSPM.
<script type="module" src="https://jspm.dev/@patternfly/elements/pf-card/pf-card.js"></script>In JavaScript modules
Include the PatternFly Element web component and its dependencies within the app. When using a bundler such as esbuild or rollup with @rollup/plugin-node-resolve, use bare module specifiers to import the components.
import '@patternfly/elements/pf-card/pf-card.js';Add PatternFly Elements markup
Add a card component.
<pf-card>
<h3 slot="header">Card header</h3>
<p>This is the pf-card body.</p>
<pf-button slot="footer">OK</pf-button>
</pf-card>Card header
This is the pf-card body.
Add attributes
Attributes can be used to adjust a theme, a palette color, a priority, set default values, etc. Be sure to check out the "Attributes" section for each component to see which attributes are available.
<pf-card rounded>
<h3 slot="header">Card header</h3>
<p>This is the pf-card body.</p>
<pf-button slot="footer">OK</pf-button>
</pf-card>Card header
This is the pf-card body.
Use CSS variables to customize or theme your components
CSS variables are subject to the normal cascade, so consider where you want these overrides to propogate.
Page-level CSS, theme variables
Theme variables will impact all components on the page where this CSS is loaded.
/* your-page.css */
:root {
--pf-c-card--BackgroundColor: cornflowerblue;
}Card header
This is the pf-card body.
Avoiding the flash of unstyled content (FOUC)
To hide undefined elements until they've upgraded, use the :defined
pseudo-class. You can set elements which are :not(:defined) to be
transparent, and make them fully opaque in a <noscript> style.
In this example, we load PatternFly elements from
https://jspm.dev.
Replace the URLs with a CDN of your choice or locally-bundled files, depending on your needs.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>PatternFly Elements - Avoiding the FOUC</title>
<style>
:root {
--reveal-delay: 1s;
--reveal-duration: 0.2s;
}
pf-card {
opacity: 1;
transition: opacity var(--reveal-duration) ease var(--reveal-delay);
}
pf-card:not(:defined) {
opacity: 0;
}
</style>
<!-- Add noscript styles to immediately reveal content when JavaScript is disabled -->
<noscript>
<style>
pf-card:not(:defined) {
opacity: 1;
}
</style>
</noscript>
<script type="module" src="https://jspm.dev/@patternfly/elements/pf-card/pf-card.js"></script>
</head>
<body>
<pf-card>
<h1 slot="header">No FOUC</h1>
<p>Content will remain hidden until component definitions are loaded.</p>
</pf-card>
</body>
</html>