So you can tweak the positional difference between the placeholder text and value simply by tweaking the padding or line-height using that pseudo-element selector: input[type=text] { padding:4px; } input[type=text]::-webkit-input-placeholder { padding-top:5px; } Or whatever.
Identifying and describing action-reaction force pairs is a simple matter of identifying the two interacting objects and making two statements describing who is pushing on whom and in what direction. For example, consider the interaction between a baseball bat and a baseball.
1 The forces you hit feather and feather hits you are a Newton's Third Law action/reaction force pair, so they must always be exactly equal in size. 2  If an object isn't strong enough to exert a certain amount of force on you, then you can't exert that amount of force on it. Call this the action force, and notice that this force pushes the Earth-not you! 2  According to Newton's Third Law, the reaction force in this interaction must be Earth pushes you upward, and this is the force that causes you to accelerate into the air.