lc/sub.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>HTML Runner</title>
    <style>
        body {
            font-family: Arial, sans-serif;
            max-width: 800px;
            margin: 0 auto;
            padding: 20px;
        }
        #htmlInput {
            width: 100%;
            height: 200px;
            margin-bottom: 10px;
        }
        #output {
            border: 1px solid #ccc;
            padding: 10px;
            margin-top: 20px;
        }
      .black-box {
        background-color: black;
      }
      .heading {
      color: white;
      }
    </style>
</head>
<body>
  <div class="black-box">
    <h1 class="heading">HTML Runner</h1>
  </div>
    <textarea id="htmlInput" placeholder="Enter your HTML code here"></textarea>
    <button onclick="runHTML()">Run HTML</button>
    <div id="output"></div>

    <script>
        function runHTML() {
            const htmlInput = document.getElementById('htmlInput').value;
            const outputDiv = document.getElementById('output');
            outputDiv.innerHTML = htmlInput;
        }
    </script>
</body>
</html>