Transition Effect with CSS Masks

Today we’d like to show you how to create an intriguingly simple, yet eye-catching transition effect using CSS Masks. Together with clipping, masking is another way of defining visibility and composite with an element. In the following tutorial we’ll show you how to apply the new properties for a modern transition effect on a simple slideshow. We’ll be applying animations utilizing the steps() timing function and move a mask PNG over an image to achieve an interesting transition effect.