If you are trying to replicate the blur animation that you see on the Stripe.com website’s client showcase section, then take a look at this pure CSS snippet by Riccardo Zanutta. In this snippet, you can showcase the logo for various clients in a row and when you try to hover over them the entire list of logos will blur out revealing a button.
If you are having trouble with the pen, try the archived copy on GitHub
Client Logo Showcase Blur Snippet
See the Pen Stripe hover blur animation by Riccardo Zanutta (@rickzanutta) on CodePen.0