RunCSS is the runtime equivalent of TailwindCSS, featuring the same CSS utility class names, but with no build step required. It achieves this by generating CSS on the fly with JavaScript.
RunCSS comes with batteries included. By default all additional variants such as hover, active, visited, group-hover, sm, lg etc work with all class names. All packaged in a single 25kb (8kb after compression) JS file!
Add to <head>:
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/runcss/dist/runcss.min.css"> <script src="https://cdn.jsdelivr.net/npm/runcss/dist/runcss.min.js" defer watch></script>
Done! RunCSS will parse the documents and generate the corresponding classes, with no further configuration required. RunCSS will also watch for new element insertions and parse them. Remove the watch attribute to disable this feature.
Check the examples/ directory for some examples.
You may add the runcss-cloak attribute to any element to hide it until RunCSS processes it.
For example:
<body runcss-cloak> <img class="w-3 h-3" src="mylargeimage.png"> </body>
TODO - WORK IN PROGRESS
Before loading runcss.js, add the following script:
<script> window.runcssConfig = { colors: { 'main': '#fff', 'secondary': { 100: '#09132aa' }, }, screens: { sm: '480px', md: '768px', lg: '976px', xl: '1440px', }, fontFamily: { sans: ['Graphik', 'sans-serif'], serif: ['Merriweather', 'serif'], }, } </script> <script></script>
You may use it to either extend or override default values. Currently, this is not yet implemented. colors, screens and fontFamily.
<script type="module"> import RunCSS, {extendRunCSS} from "https://cdn.jsdelivr.net/npm/runcss/dist/runcss.min.mjs" // Add things to the RunCSS templates extendRunCSS( ({defaultsTemplate, ruleTemplate, shortcuts, states}) => { states.modifiers['myclass'] = '.myclass' return {defaultsTemplate, ruleTemplate, shortcuts, states} }) // Setup theme const { processClasses, startWatching, stopWatching, exportCSS } = RunCSS({ colors: { 'main': '#fff', }, //.... same options as above }) // Add classes processClasses('sm:text-red text-blue') // don't worry about duplicates // Iterate through document for(const element of document.querySelectorAll('*[class]')) { processClasses(element.getAttribute("class")) } // Start watching for changes startWatching(document.getElementById('hello')) // if not specified, fallback to document.body // Stop watching stopWatching() // Log generated CSS file console.log(exportCSS()) // Remove runcss-cloak attribute const hiddenNodes = document.querySelectorAll('*[runcss-cloak]') for(let node of hiddenNodes){ node.removeAttribute('runcss-cloak') } </script>
Currently, the project is production-ready, and should cover the totality of TailwindCSS classes. However, since we underwent a major rewrite recently, there may be some less common feature missing or misbehaving compared to Tailwind.
If you find something missing, feel free to open an issue.
By design, this parser is way less strict than Tailwind's one. This allows smaller builds and faster load times, but also means that wrong values may be turned into CSS rules regardless. This is intentional, because the browser will discard those rules anyway.
To enable Tailwind's autocompletion, install the official Tailwind extension, and create an empty file called tailwind.config.js in the same folder of your html files.
Clone this repository and use npm to install dependencies:
git clone https://github.com/lucafabbian/runcss.git
cd runcss
npm iThen, you may use:
npm run build # Build for production npm run dev # Build, watch for changes + start server with live reload!
Current author: Luca Fabbian [email protected]
Based on RunCSS of mudgen, follow him on twitter.
Distributed under MIT License.