Hey, that's a pretty interesting use for vmax! However, there is a downside to that approach. The speed of the animation will appear different depending on where you click. It will be faster at the center than at the corners.   Did you just guess the 260 value? That's close, but it actually won't cover the screen if it starts at a corner of a square shaped window.     See the Pen aaOKPY by osublake (@osublake) on CodePen