Invisible Ink

To read an answer in invisible ink, you must use your mouse to highlight where the invisible answer is written, and it will appear before you.

How do you do this? You move the mouse arrow to the beginning of where the hidden answer is, then you left-click with your mouse -- keep that button held down! And then move the little mouse arrow right over that spot where the invisible text is. This highlights the answer!

Why not try it out below?

And so the answer is revealed!

Congratulations!