Fullscreen Video Opening Animation with CSS3

In this in-depth tutorial we want to show you how to create a similar video opening effect to the one seen on momentsapp.com. If you click the “Watch the video” button on the Moments App page, you will see a new image appearing on the photo stack which contains a video. The animation is a slight rotation of the frame and a subtle scaling of the video, which already starts to play. The whole wrapper expands to full screen without any play controls; just the closing cross will be shown. Once the video ends, or, if the user clicks on the closing cross, the video will simply disappear.