Ask HN: What's the name of this HTML copy and paste app?

A year or so ago on HN I remember seeing a post that was a website where you could paste anything and it would replicate the styles from the source web page.

It was touted as a way for designers to share examples of designs on other websites.

It was pretty impressive, and I can't seem to find it anywhere now. Forgot the name and can't find the link.

Anyone know what I'm talking about?