Testimonials that already look like your site

On load the widget reads your page: your CSS custom properties if you define any, and otherwise the computed styles of your own elements — what your body text actually resolves to, what colour your buttons actually are, what radius your cards actually use. It renders inside a shadow root, so nothing it does can leak into your styles.

Most sites define no colour variables at all, which is why the second path is the one that matters. We measured it on twenty real sites — Tailwind, plain CSS, Webflow, Framer, and CSS-in-JS — across Chrome and Safari, in light and dark. At least sixteen of twenty rendered correctly with zero configuration on every one of those combinations, and none of them rendered badly. The full results are written up here, including the three that missed and the criteria that turned out weaker than their names suggested.

It is one script tag, it carries no framework, and it is built so that it can never throw an error into your page.