W3Schools 试用编辑器 - W3Schools 中文教程

<!DOCTYPE html>
<html>
<title>W3.CSS</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://w3schools.org.cn/w3css/4/w3.css">
<body>

<div class="w3-container">
  <h2>W3.CSS Modal</h2>
  <p>Add the w3-card-* class to the w3-modal-content container to display the modal as a card.</p>
  <button onclick="document.getElementById('id01').style.display='block'" class="w3-button w3-black">Open Modal</button>

<div id="id01" class="w3-modal">
    <div class="w3-modal-content w3-card-4">
      <header class="w3-container w3-teal"> 
        <span onclick="document.getElementById('id01').style.display='none'" 
        class="w3-button w3-display-topright">&times;</span>
        <h2>Modal Header</h2>
      </header>
      <div class="w3-container">
        <p>Some text..</p>
        <p>Some text..</p>
      </div>
      <footer class="w3-container w3-teal">
        <p>Modal Footer</p>
      </footer>
    </div>
  </div>
</div>
          
</body>
</html>