垂直居中的几种方法

2018-07-10 分类：CSS 作者：管理员阅读（1258）

第一种:父元素宽高不确定,元素垂直水平居中 table table-cell

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>水平垂直居中</title>
</head>
<style>
    *{margin: 0;padding: 0;}
    html,body{
        height: 100%;
    }
    #wrap{
        display: table;
        width: 100%;
        height: 100%;
    }
    #content{
        display: table-cell;
        vertical-align: middle;
        background-color:#FFCCFF;
        width:760px;
    }
    #insert{
        text-align: center;
        height: 200px;
    }
    #in{
        display: inline-block;
        width: 200px;
        height: 200px;
        background: cyan;
        line-height: 200px;
        text-align: center;
    }
</style>
<body>
    <div id="wrap">
        <div id="content">
            <div id="insert">
                <div id="in">中</div>
            </div>
        </div>
    </div>
</body>
</html>

第二种:用定位的垂直水平居中

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>水平垂直居中</title>
</head>
<style>
    #in{
        position: absolute;
        left: 0;
        top:0;
        bottom: 0;
        right: 0;
        margin: auto;
        width: 200px;
        height: 200px;
        background: cyan;
        line-height: 200px;
        text-align: center;
    }
</style>
<body>
    <div id="in">中</div>
</body>
</html>

第三种:父元素子元素宽高确定了的水平垂直居中 box-sizing:border-box; padding挤到水中垂直居中即可

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>水平垂直居中</title>
</head>
<style scoped>
    *{margin: 0;padding: 0;}
    html,body{
        height: 100%;
    }
    #box{
        width: 600px;
        height: 600px;
        border: 1px solid #000;
        box-sizing: border-box;
        padding: 200px;
    }
    #in{
        margin:0 auto;
        width: 200px;
        height: 200px;
        background: cyan;
        line-height: 200px;
        text-align: center;
    }
</style>
<body>
    <div id="box">
        <div id="in">中</div>
    </div>
</body>
</html>

第四种:和第三种相似,只是没有用盒模型了算好margin的值就margin : 值 auto;即可

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>水平垂直居中</title>
</head>
<style scoped>
    *{margin: 0;padding: 0;}
    html,body{
        height: 100%;
    }
    #box{
        width: 600px;
        height: 600px;
        border: 1px solid #000;
    }
    #in{
        margin:200px auto;
        width: 200px;
        height: 200px;
        background: cyan;
        line-height: 200px;
        text-align: center;
    }
</style>
<body>
    <div id="box">
        <div id="in">中</div>
    </div>
</body>
</html>

第五种:伸缩盒子

<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>水平垂直居中</title>
</head>
<style type="text/css">
html,body{
    height: 100%;
}
body{
    margin: 0;
}
.container{
    height:100%;
    display: flex; 
    justify-content: center; 
    align-items: center; 
    text-align:center;
    background: #ccc;
}
#box{
    width: 100px;
    height: 100px;
    background: orange;
    text-align: center;
    line-height: 100px;
}
</style>
<body>
<div class="container">
    <div id="box">中</div>
</div>
</body>
</html>

第六种：tanslate（）

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>垂直居中</title>
</head>
<style>
html{
    height: 100%;
}
    body{
        margin: 0;padding: 0;
        position: relative;
        height: 100%;
    }
    #child{
        width: 100px;
        height: 100px;
        background: red;
        position: absolute;
        top: 50%;
        left: 50%;
        transform:translate(-50%,-50%);
    }
</style>
<body>
    <div id="child"></div>
</body>
</html>

番外篇:布局之三列-两边固宽-中间自适应

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>三列-两边固宽-中间自适应</title>
</head>
<style>
    html,
    body{
        height: 100%;
        position: relative;
    }
    body{
        margin:0;
        padding: 0;
    }
    .a,.c{
        width: 100px;
        height: 100%;
        background: pink;
        position: absolute;
    }
    .c{
        right: 0;
    }
    .b{
        position: absolute;
        left: 100px;
        height: 100%;
        background: cyan;
        width:calc(100% - 200px);
    }
</style>
<body>
    <div class="a"></div>
    <div class="b"></div>
    <div class="c"></div>
</body>
</html>

布局之 5列-两边固宽-中间3列自适应

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>5列-两边固宽-中间3列自适应</title>
</head>
<style>
    html,
    body{
        height: 100%;
        position: relative;
    }
    body{
        margin:0;
        padding: 0;
    }
    .a,.c{
        width: 100px;
        height: 100%;
        background: pink;
        position: absolute;
    }
    .c{
        right: 0;
    }
    .b{
        position: absolute;
        left: 100px;
        height: 100%;
        background: cyan;
        width:calc(100% - 200px);
    }
    .d1,.d2,.d3{
        width:calc(100%/3);
        height: 100%;
        float: left;
    }
    .d1{
        background: #ffcf42;
    }
    .d2{
        background: #21ffff;
    }
    .d3{
        background: #5a2cb5;
    }
</style>
<body>
    <div class="a"></div>
    <div class="b">
        <div class="d1"></div>
        <div class="d2"></div>
        <div class="d3"></div>
    </div>
    <div class="c"></div>
</body>
</html>

布局之一边固宽一边自适应

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>一边固宽一边自适应</title>
</head>
<style>
    html,
    body{
        height: 100%;
        position: relative;
    }
    *{
        margin:0;
        padding: 0;
    }
    .a{
        width: 100%;
        height: 40px;
        background: red;
    }
    .b{
        height: 100%;
        width: calc(100% - 100px);
        background: #5a2cb5; 
        float: left; 
        text-align: center;
        line-height: 40px;
    }
    .c{
        height: 100%;
        width: 100px;
        background: yellow;
        float: right; 
        text-align: center;
        line-height: 40px;
    }
</style>
<body>
    <div class="a">
        <div class="b">自适应</div>
        <div class="c">固宽</div>
    </div> 
</body>
</html>

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