css function is a function that returns a string.
You can use the css function to create a css string.
<any css={css` color: red; `}/> <any className={"d0"}/>
You can use the css function to create a css object.
<any className={css({ color: "red" })}/> <any className={"d0"}/>
Also, css function can be used in the style prop. (responsive, pseudo-class, etc.)
// It works like this <any style={css({ color: ["red", "blue"], _hover: { color: "green" } })}/>