This is a cool button that can be used on an eCommerce site that uses drones for delivery. Remember we had a similar one where the button changes to a delivery truck and in this one by Nikolay Talanov we see that a drone pick it up and flies over animating a progress bar along the way that can be used to represent the completed stage of the delivery (no delivery will be this quick but I am loving the idea behind it).
If you are having trouble with the pen, try the archived copy on GitHub
Button to Drone Delivery Snippet
See the Pen Drone Delivery Submit CSS Animation by Nikolay Talanov (@suez) on CodePen.default