Sultan

@Olivia-SY129 can you add a test case, i'm assuming we can replace `replaceAll` with just `replace` safe assumption?

Naming suggestion: `@@style` in a similar vein to `@@iterator` instead of `css` so `{'@@style': string}` or `{'@@style': function}`

@kof If it should be unique i think it should only be "pseudo" unique and not "react" unique i.e `Symbol.for('@@style')`, so other react-like libraries can support it. the underlining abstractuib...