React의 다크 모드(vite)

**create a fresh folder
run the commands npm create vite@latest (in the folder directory)
also cd to the directory and run the command npm install**

step 1
`Code in App.jsx`
import React, { useState } from 'react';
import { FaSun, FaMoon } from 'react-icons/fa'; // Import Sun and Moon icons
import './App.css';

function App() {
  const [darkMode, setDarkMode] = useState(false);

  // Toggle dark mode
  const toggleTheme = () => {
    setDarkMode(!darkMode);
  };

  return (
    <div className={darkMode ? 'dark' : 'light'}>
      <div className="container">
        <h1>{darkMode ? 'Dark Mode' : 'Light Mode'}</h1>
        <button className="toggle-button" onClick={toggleTheme}>
          {darkMode ? <FaMoon className="icon" /> : <FaSun className="icon" />}
          {darkMode ? ' Dark Mode' : ' Light Mode'}
        </button>
      </div>
    </div>
  );
}

export default App;

Code in App.css
`body {
    margin: 0;
    font-family: Arial, sans-serif;
  }

  .container {
    text-align: center;
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
  }

  /* Light Mode Styles */
  .light {
    background-color: #f9f9f9;
    color: #333;
  }

  /* Dark Mode Styles */
  .dark {
    background-color: #333;
    color: #f9f9f9;
  }

  /* Toggle Button Styles */
  .toggle-button {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    border: none;
    border-radius: 30px;
    cursor: pointer;
    font-size: 16px;
    font-weight: bold;
    background-color: #007bff;
    color: white;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
  }

  .toggle-button:hover {
    background-color: #0056b3;
    transform: scale(1.05);
  }

  .icon {
    font-size: 20px;
  }`