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>