复杂子布局在父布局中水平加垂直居中
-
效果图：
左侧一个div，右侧3个 -
基本布局架构：
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title>cell</title>
</head>
<body>
<style type="text/css" rel="stylesheet">
.content {
color: white;
}
.row {
height: 200px;
background-color: red;
}
.left {
background-color: blue;
display: inline-block;
width: 100px;
height: 150px;
}
.right {
width: 100px;
height: 150px;
background-color: green;
display: inline-block;
}
</style>
<div class="content">
<div class="row">
<div class="left">left</div>
<div class="right">
<div class="right1">right1</div>
<div class="right2">right1</div>
<div class="right3">right3</div>
</div>
</div>
</div>
</body>
</html>
.left和.right在一行，可以用inline-block来实现不换行
这时候效果图如下：
由于行内元素默认基线对齐,所以会出现这样的效果
-
设置.row的text-align: center;让元素水平居中
-
设置行高让元素里的内容垂直居中
-
设置vertical-align: middle;让行内元素在行内中线对齐
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title>cell</title>
</head>
<body>
<style type="text/css" rel="stylesheet">
.content {
color: white;
}
.row {
height: 200px;
background-color: red;
text-align: center;
line-height: 200px;
}
.left {
background-color: blue;
display: inline-block;
width: 100px;
height: 150px;
line-height: 150px;
vertical-align: middle;
}
.right {
background-color: green;
display: inline-block;
width: 100px;
height: 150px;
vertical-align: middle;
}
.right1 {
width: 100px;
height: 50px;
line-height: 50px;
}
.right2 {
width: 100px;
height: 50px;
line-height: 50px;
}
.right3 {
width: 100px;
height: 50px;
line-height: 50px;
}
</style>
<div class="content">
<div class="row">
<div class="left">left</div>
<div class="right">
<div class="right1">right1</div>
<div class="right2">right1</div>
<div class="right3">right3</div>
</div>
</div>
</div>
</body>
</html>
-使用flexbox弹性布局实现此效果非常简单：
<!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>
</head>
<style>
.row {
display: flex;
flex-direction: row;
height: 200px;
background-color: red;
align-items: center;
justify-content: center;
color: white;
}
.item {
height: 150px;
width: 100px;
text-align: center;
}
.item.left {
background: blue;
line-height: 150px;
}
.item.right {
background: green;
}
.rightitem {
height: 50px;
line-height: 50px;
}
</style>
<body>
<div class="content">
<div class="row">
<div class="left item">left</div>
<div class="right item">
<div class="right1 rightitem">right1</div>
<div class="right2 rightitem">right1</div>
<div class="right3 rightitem">right3</div>
</div>
</div>
</div>
</body>
</html>
