npm run eject

.theList{
  list-style: none;
  padding-left: 0;
  width: 255px;
}

.theList li{
  color: #333;
  background: rgba(255,255,255,0.5);
  padding: 15px;
  margin-bottom: 15px;
  border-radius: 5px;
  cursor: pointer;
}

import React from 'react';
import styles from './TodoItem.css';

class TodoItem extends React.Component {
  constructor(props){
    super(props);
    this.handleChange = this.handleChange.bind(this);
  }

  handleChange(e){
    this.props.onDelete(e.target.getAttribute('name'));
  }

  render(){
    let todoEntries = this.props.entries;
    return (
      <!-- 引用样式 -->
      <ul className={styles.theList}>
        {todoEntries.map((item)=>{
          return (
            <li key={item.key} onClick={this.handleChange} name={item.key}>{item.text}</li>
          )
        })}
      </ul>
    )
  }
}

export default TodoItem;