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.
Here are some examples of action-reaction forces that depend on the objects being in direct contact, meaning that the two objects involved are actually touching each other to exert forces on each other. These are called  contact forces 1  .. Action: the tires on a car push on the roadâ¦.