I was just messing with my new iPad and pressed it maybe a bit to hard and the one are where my finger was underneath looked liquidy as i pressed it. Is it cause of hoe the screen is made. I didn't do again just hoping the one press didn't mess up the touch sensitivity. There is no mark on the screen just as I pressed it. This is probably a silly question lol. Just curious if it's normal to do that and does it ruin the screen?