HTML代码运行工具

index.html
UTF-8
<!DOCTYPE html>
<html lang="zh-CN">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>示例页面</title>
  <style>
    body {
      font-family: 'Arial', sans-serif;
      line-height: 1.6;
      margin: 0;
      padding: 20px;
      background-color: #f5f5f5;
      color: #333;
    }
    .container {
      max-width: 800px;
      margin: 0 auto;
      background-color: white;
      padding: 30px;
      border-radius: 8px;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    }
    h1 {
      color: #2c3e50;
      text-align: center;
      margin-bottom: 20px;
    }
    button {
      display: block;
      margin: 20px auto;
      padding: 10px 20px;
      background-color: #3498db;
      color: white;
      border: none;
      border-radius: 4px;
      cursor: pointer;
      font-size: 16px;
      transition: background-color 0.3s;
    }
    button:hover {
      background-color: #2980b9;
    }
    .card {
      background-color: #f9f9f9;
      border: 1px solid #e0e0e0;
      border-radius: 8px;
      padding: 20px;
      margin: 20px 0;
    }
  </style>
</head>
<body>
  <div class="container">
    <h1>HTML代码运行示例</h1>
    <p>这是一个示例页面，展示如何在浏览器中运行HTML代码。</p>
    
    <div class="card">
      <h2>功能特点</h2>
      <ul>
        <li>支持内联CSS样式</li>
        <li>支持内联JavaScript</li>
        <li>实时预览效果</li>
      </ul>
    </div>
    
    <button onclick="showMessage()">点击我</button>
    
    <script>
      function showMessage() {
        alert('Hello, World!');
      }
    </script>
  </div>
</body>
</html>
Preview