1. //1.行内样式
    2. <hr style={{background: "#DDDDDD", height: "1px", border: "none"}}/>
    1. //2.classnames
    2. npm i classnames
    3. //js
    4. constructor(props){
    5. super(props);
    6. this.state={
    7. showMember: false,
    8. }
    9. }
    10. import classNames from 'classnames'
    11. <div className={classNames({
    12. 'show': this.state.showMember
    13. })}></div>
    14. //css
    15. .show{
    16. display:block;
    17. }