Fun Fact: Press any key on this virtual keyboard or on your keyboard to hear keypress sound. Try playing with few keys like Caps Lock, Num Lock, Scroll Lock, and F12 and moreover there won't be any keypress sound for these keys due to let users know about their unique functionality.

Note: You will experience that whenever a key is pressed, there is animation that makes key is pressed and when you press any other key or the same key, then that key is back to normal state. This is normal behavior in this virtual keyboard context. However, in reality key will popped in-out very quickly.