用diiv实现多个方块居中嵌套--padding

╰半橙微兮° 2023-06-05 08:09 5阅读 0赞

案例：用diiv嵌套多个正方形，配合盒模型相关知识，使每个div在他的父元素上居中。（每个div中心点对齐）

涉及到margin的各种合并问题。

（触发BFC是更好的解决方案等，为做练习此处只考虑padding）

思路：给减少每个元素的宽高，加给padding。

<!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <meta http-equiv="X-UA-Compatible" content="ie=edge">
        <title>Document</title>
        <style type="text/css">
         .first {
        
             width: 500px;height: 500px;background-color: red;padding: 50px;
         }
         .second {
        
             width: 400px;height: 400px;background-color: orange;padding: 50px;
         }
         .third {
        
             width: 300px;height: 300px;background-color: yellow;padding: 50px;
         }
         .forth {
        
             width: 200px;height: 200px;background-color: green;padding: 50px;
         }
         .fifth {
        
             width: 100px;height: 100px;background-color: blue;padding: 50px;
         }
         .center {
        
             width: 0;height: 0;background-color: purple;padding: 50px;
         }
        </style>
    </head>
    <body>
        <div class="first">
            <div class="second">
                <div class="third">
                    <div class="forth">
                        <div class="fifth">
                            <div class="center"></div>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </body>
    </html>

![1645790-20190627194815556-1140472863.jpg][]

转载于:https://www.cnblogs.com/sandraryan/p/11099270.html

[1645790-20190627194815556-1140472863.jpg]: /images/20230601/5e191fe664484ea0ac4964f982fde9f4.png