With this mouse hover animation by Tyler Durrett you have a solid background colour which hides the content in the section and the area around the mouse is used to reveal the text content below, the effect of the mouse can only be described by something like a sinkhole or a vortex in a ball pit and the balls falling into it.
One day or day one. You decide.by Someone Wise
If you are having trouble with the pen, try the archived copy on GitHub
Reveal Text Snippet
See the Pen Reveal Hidden Text by Tyler Durrett (@electricgarden) on CodePen.default