I have a <div> overlayed onto my page, and that tracks the mouse. However, on occasion the user is able to move the mouse at the appropriate speed to enter the tracking <div>. Also, this <div> will sometimes prevent the user from clicking something else, that is below/behind.
What is the correct way to visually show this <div>, without it 'blocking' or interfering with the underlying DOM, or any of them for that matter? In particular, to stop it interfering with mouse events.