应用C◎SS完成小盒子水准竖直垂直居中的方式(

2021-03-24 08:04 jianzhan

初始编码:

center.html

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

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Center</title>
    <link rel="stylesheet" href="center.css">
</head>

<body>
    <div class="father">
        <div class="son"></div>
    </div>
</body>

</html>

center.css

body {
    background-color: #6ed0ff;
}

.father {
    background-color: #be33ec;
    border-radius: 20px;
    box-shadow: 0 0 15px rgb(0, 0, 0);
    margin: 100px auto;
    width: 300px;
    height: 300px;
}

.son {
    background-color: #fcff00;
    border-radius: 20px;
    box-shadow: 0 0 10px rgb(0, 0, 0);
    width: 100px;
    height: 100px;
}

初始实际效果:

完成子小盒子相对性于父小盒子竖直垂直居中实际效果:

1. grid

.father {
    display: grid;
}

.son {
    align-self: center;
    justify-self: center;
}

2. absolute + 负margin

.father {
    position: relative;
}

.son {
    position: absolute;
    left: 50%;
    top: 50%;
    margin-left: -50px;
    margin-top: -50px;
}

3. absolute + transform

.father {
    position: relative;
}

.son {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
}

4. absolute + margin: auto

.father {
    position: relative;
}

.son {
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    margin: auto;
}

5. flex

.father {
    display: flex;
    justify-content: center;
    align-items: center;
}

6. margin+transfrom

.father {
    overflow: hidden;
}

.son {
    margin: 50% auto;
    transform: translateY(-50%);
}

7. table-cell

.father {
    display: table-cell;
    text-align: center;
    vertical-align: middle;
}

.son {
    display: inline-block;
}

8. inline-block + vertical-align

.father {
    text-align: center;
    line-height: 300px;
}

.son {
    display: inline-block;
    vertical-align: middle;
}

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