html中一个div中平均一行分配四个盒子，可展开与收起所有的盒子

1.截图显示部分
在这里插入图片描述

2.代码展示部分

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

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <style>
        .container {
            position: relative;
            display: flex;
            flex-wrap: wrap;
            border: 3px solid;
            border-color: #D4E3FC;
        }
        .box {
            position: relative;
            width: 23%;
            height: 100px;
            box-sizing: border-box;
            padding: 10px;
            background-color: #D4E3FC;
            margin: 5px;
            display: none;
            border-radius: 10px;
        }
        #toggleButton {
            position: absolute;
            bottom: 0;
            right: 0;
            margin: 10px;
            cursor: pointer;
            color: blue;
            text-decoration: underline;
        }
    </style>
    <title>缩放盒子</title>
</head>
<body>
    <div class="container" id="boxContainer">
        <div class="box">Box 1</div>
        <div class="box">Box 2</div>
        <div class="box">Box 3</div>
        <div class="box">Box 4</div>
        <div class="box">Box 5</div>
        <div class="box">Box 6</div>
        <div class="box">Box 7</div>
        <div class="box">Box 8</div>
        <div class="box">Box 9</div>
        <div class="box">Box 10</div>
        <div class="box">Box 11</div>
        <div class="box">Box 12</div>
        <div class="box">Box 13</div>
        <div class="box">Box 14</div>
        <div class="box">Box 15</div>
        <div class="box">Box 16</div>
        <div id="toggleButton">展开/收缩</div>
    </div>
    <script>
        var boxes = document.querySelectorAll('.box');
        for(var i = 0; i < 4; i++) {
            boxes[i].style.display = 'block';
        }
        var toggleState = false;
        document.getElementById('toggleButton').addEventListener('click', function () {
            toggleState = !toggleState;
            for(var i = 4; i < boxes.length; i++) {
                boxes[i].style.display = toggleState ? 'block' : 'none';
            }
        });
    </script>
</body>

</html>