Even just showing how a :hover works in some of these libraries would be good.
Tommy Hodgins

CSS-in-JS is literally CSS-in-JS, so you can use any pseudoclasses you want. For example, adding aΒ :hover effect on a button element in plain CSS would look like this:

// css
.button:hover {
background-color: red;
// html
<button class='button'>Hello</button>

styled-components looks like this:

const Button = styled.button`
  &:hover {
background-color: red;

And in glamor the same thing would look like this:

const rule = css({
':hover': {
background-color: 'red'
<button className={rule]>Hello</Hello>

This of course applies also to animations, iterators and other kinds of CSS things you could imagine.

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