菜园前端

Appearance

实现元素水平垂直居中效果 ​

效果图如下

通过 flex 方式实现 ​

html
<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8" />
        <meta http-equiv="X-UA-Compatible" content="IE=edge" />
        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
        <title>Document</title>
        <style>
            .container {
                position: relative;
                width: 150px;
                height: 150px;
                background-color: #5cd8a2;
                display: flex;
                justify-content: center;
                align-items: center;
            }

            .box {
                width: 50px;
                height: 50px;
                background-color: #ffcb3d;
            }
        </style>
    </head>
    <body>
        <div class="container">
            <div class="box"></div>
        </div>
    </body>
</html>
<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8" />
        <meta http-equiv="X-UA-Compatible" content="IE=edge" />
        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
        <title>Document</title>
        <style>
            .container {
                position: relative;
                width: 150px;
                height: 150px;
                background-color: #5cd8a2;
                display: flex;
                justify-content: center;
                align-items: center;
            }

            .box {
                width: 50px;
                height: 50px;
                background-color: #ffcb3d;
            }
        </style>
    </head>
    <body>
        <div class="container">
            <div class="box"></div>
        </div>
    </body>
</html>

通过 margin 和 absolute 实现 ​

html
<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8" />
        <meta http-equiv="X-UA-Compatible" content="IE=edge" />
        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
        <title>Document</title>
        <style>
            .container {
                position: relative;
                width: 150px;
                height: 150px;
                background-color: #5cd8a2;
            }

            .box {
                margin: auto;
                position: absolute;
                top: 0;
                right: 0;
                bottom: 0;
                left: 0;
                width: 50px;
                height: 50px;
                background-color: #ffcb3d;
            }
        </style>
    </head>
    <body>
        <div class="container">
            <div class="box"></div>
        </div>
    </body>
</html>
<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8" />
        <meta http-equiv="X-UA-Compatible" content="IE=edge" />
        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
        <title>Document</title>
        <style>
            .container {
                position: relative;
                width: 150px;
                height: 150px;
                background-color: #5cd8a2;
            }

            .box {
                margin: auto;
                position: absolute;
                top: 0;
                right: 0;
                bottom: 0;
                left: 0;
                width: 50px;
                height: 50px;
                background-color: #ffcb3d;
            }
        </style>
    </head>
    <body>
        <div class="container">
            <div class="box"></div>
        </div>
    </body>
</html>

更新时间: