~~~ import styled from "styled-components"; export const HeaderWrapper = styled.div` height: 58px; border-bottom: 1px solid #eee; `; ~~~ ~~~ //在组件中使用 import React, { Component } from "react"; import { HeaderWrapper } from "./style"; class App extends Component { render() { return ( <HeaderWrapper> </HeaderWrapper> ); } } export default App; ~~~