style-component
최상위 태그인 Component가 생성됨.
https://style-components.com/

1. npm install styled-components  설치
2. import style from 'style-components'; 


Button 최상위 태그인 Component 생성

import styled from 'styled-components'
const styleButton = style`
  color : white;
  background : purple;
`;

Div 최상위 태그인 Component 생성

import styled from 'styled-components';
const StyleButton = style.div`
  color : white;
  background : purple;
`;