Using the Carousel default Pattern in Proto.io. I use a few screen interactions to turn it into an Autoscroll Carousel.
Design Credits to: https://www.sketchappsources.com/resource/download-3665.html
Graphics & Credit from: https://www.sketchappsources.com/free-source/3805-clean-web-login-form-sketch-freebie-resource.html.
A simple Login page of a webpage using interactive Proto.io components.