This repository contains both a CSS as well as a TypeScript version of the minimum CSS required to render a Webfeed in a browser environment. The TypeScript version has RawJS typings, so the CSS can be an argument in a call to raw.style() or raw.css().
The CSS file is available on jsDelivr. If you want to include the CSS file statically in your HTML, use the following snippet:
<link rel="stylesheet" type="text/css" href="https://cdn.jsdelivr.net/npm/webfeed-css/webfeed.css">npm install webfeed-css
const webfeedCss = require("webfeed-css") as typeof import("webfeed-css");
// Use it somewhere.
document.head.append(raw.style(webfeedCss));