纯css tabs选项卡

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Pure CSS Tabs</title>
    <style>
        .tabs {
            display: flex;
        }
        .tab {
            padding: 10px;
            cursor: pointer;
        }
        .tab:hover,
        .tab.active {
            background-color: #ddd;
        }
        .tab-content {
            display: none;
        }
        .tab-content.active {
            display: block;
        }
    </style>
</head>
<body>
    <div class="tabs">
        <div class="tab active" data-tab="1">Tab 1</div>
        <div class="tab" data-tab="2">Tab 2</div>
        <div class="tab" data-tab="3">Tab 3</div>
    </div>
    <div class="tab-contents">
        <div class="tab-content active" data-tab="1">Content 1</div>
        <div class="tab-content" data-tab="2">Content 2</div>
        <div class="tab-content" data-tab="3">Content 3</div>
    </div>

    <script>
        document.querySelectorAll('.tab').forEach(tab => {
            tab.addEventListener('click', () => {
                const tabId = tab.getAttribute('data-tab');
                document.querySelectorAll('.tab').forEach(t => t.classList.remove('active'));
                document.querySelectorAll('.tab-content').forEach(c => c.classList.remove('active'));
                tab.classList.add('active');
                document.querySelector(`.tab-content[data-tab="${tabId}"]`).classList.add('active');
            });
        });
    </script>
</body>
</html>