无法在react本机中创建圆形按钮

.circle-button {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background-color: #007bff;
  color: #fff;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
}

import React from 'react';
import './Button.css';

const CircleButton = () => {
  return (
    <button className="circle-button">
      {/* 按钮内容 */}
    </button>
  );
};

export default CircleButton;

import React from 'react';
import CircleButton from './CircleButton';

const App = () => {
  return (
    <div>
      {/* 其他组件 */}
      <CircleButton />
      {/* 其他组件 */}
    </div>
  );
};

export default App;