css 实现手风琴效果

效果：

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <div class="tab">
        <label for="tab1">
            <div class="tab-item">手风琴</div>
        </label>
        <input type="radio" name="tab" id="tab1" checked>
        <div class="tab-content-item">1</div>
       
        <label for="tab2">
            <div class="tab-item">radio +　相邻兄弟选择器</div>
        </label>
        <input type="radio" name="tab" id="tab2">
        <div class="tab-content-item">2</div>

        <label for="tab3">
            <div class="tab-item">label</div>
        </label>
        <input type="radio" name="tab" id="tab3">
        <div class="tab-content-item">3</div>

        <label for="tab4">
            <div class="tab-item">属性选择器</div>
        </label>
        <input type="radio" name="tab" id="tab4">
        <div class="tab-content-item">4</div>

       
    </div>

</body>

</html>

 <style>
        .tab {
             200px;
        }

        .tab-item {
             200px;
            border: 1px solid #ddd;
            margin-right: 5px;
            text-align: center;
            cursor: pointer;
        }

        input[type="radio"]:checked + .tab-item {
            background: #ddd;
        }

        .tab-item:last-of-type {
            margin-right: 0;
        }

        .tab-content {
            border: 1px solid #ddd;
            margin-top: 10px;
             200px;
            height: 200px;
        }

        .tab-content-item {
            display: none;
             200px;
            height: 200px;
            text-align: center;
            border: 1px solid #ddd;
            background: #ddd;
        }
        input[type="radio"] {
            display: none;
        }
        input[type="radio"]:checked + .tab-content-item {
            display: block;
        }
    </style>

利用这个 radio + 属性选择器 +　兄弟相邻选择器＋ label的关联还可以实现tab选项卡，如果你正在看这个文章，不妨动手试试