CSS传统布局基于盒子模型,依靠display + position + float属性进行定位,在一些特殊布局显得不灵活
Flex布局,容器内的元素自动成为flex item,容器基于XY轴进行布局
其容器属性有
- flex-direction X主轴排列方向
- flex-wrap 元素换行
- flex-flow 上面2个的简写
- justify-content 主轴对齐方式
- align-items Y轴对齐方式
- align-content 多轴线对齐方式
item属性有
- order 排列顺序
- flex-grow 剩余空间膨胀值
- flex-shrink 空间不足缩小值
- flex-basis 预分配大小值
- flex 以上3个的简写
- align-self 对齐方式
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<html>
<head>
<meta charset="utf-8">
<style>
html,body{
width:100%;
height:100%;
margin:0;
padding:0;
}
body {
display: flex;
justify-content:center;
align-items:center;
flex-direction:column;
}
body > div{
background-color: #00A6C7;
border-radius: 10px;
margin:10px;
padding:10px;
width:500px;
align-self: center;
text-align:center;
}
</style>
</head>
<body>
<div>这是内容区1</div>
<div>这是内容区2<br/>换行测试</div>
</body>
</html>
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<html>
<head>
<meta charset="utf-8">
<style>
html,body{
width:100%;
height:100%;
margin:0;
padding:0;
}
body {
background-color: #f2f2f2;
display: flex;
}
body > div{
background-color: #00A6C7;
border-radius: 10px;
margin:10px;
padding:10px;
width:50%;
height:50%;
text-align:center;
}
div:nth-child(1){
align-self: flex-start;
}
div:nth-child(2){
align-self:center;
}
div:nth-child(3){
align-self:flex-end;
}
div:nth-child(4){
height:100%;
margin:0;
padding:0;
}
</style>
</head>
<body>
<div>这是内容区1</div>
<div>这是内容区2</div>
<div>这是内容区3</div>
<div>这是内容区4</div>
</body>
</html>
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<html>
<head>
<meta charset="utf-8">
<style>
html,body{
width:100%;
height:100%;
margin:0;
padding:0;
}
body {
background-color: #f2f2f2;
}
div > div{
background-color: #00A6C7;
border-radius: 10px;
margin:10px;
padding:20px 10px;
text-align: center;
flex-grow:1;
}
body > div {
display: flex;
}
</style>
</head>
<body>
<div>
<div>1/5</div>
<div>1/5</div>
<div>1/5</div>
<div>1/5</div>
<div>1/5</div>
</div>
<div>
<div>1/7</div>
<div>1/7</div>
<div>1/7</div>
<div>1/7</div>
<div>1/7</div>
<div>1/7</div>
<div>1/7</div>
</div>
<div>
<div>1/8</div>
<div>1/8</div>
<div>1/8</div>
<div>1/8</div>
<div>1/8</div>
<div>1/8</div>
<div>1/8</div>
<div>1/8</div>
</div>
<div>
<div>1/9</div>
<div>1/9</div>
<div>1/9</div>
<div>1/9</div>
<div>1/9</div>
<div>1/9</div>
<div>1/9</div>
<div>1/9</div>
<div>1/9</div>
</div>
</body>
</html>