三栏布局
浮动布局
<section class="layout float">
<style media="screen">
.layout.float .left {
float: left;
width: 300px;
background: red;
}
.layout.float .center {
background: yellow;
}
.layout.float .right {
float: right;
width: 300px;
background: blue;
}
</style>
<h1>三栏布局</h1>
<article class="left-right-center">
<div class="left"></div>
<div class="right"></div>
<div class="center">
<h2>浮动解决方案</h2>
1.这是三栏布局的浮动解决方案; 2.这是三栏布局的浮动解决方案;
3.这是三栏布局的浮动解决方案; 4.这是三栏布局的浮动解决方案;
5.这是三栏布局的浮动解决方案; 6.这是三栏布局的浮动解决方案;
</div>
</article>
</section>
绝对布局
<section class="layout absolute">
<style>
.layout.absolute .left-center-right > div {
position: absolute;
}
.layout.absolute .left {
left: 0;
width: 300px;
background: red;
}
.layout.absolute .center {
left: 300px;
right: 300px;
background: yellow;
}
.layout.absolute .right {
right: 0;
width: 300px;
background: blue;
}
</style>
<h1>三栏布局</h1>
<article class="left-center-right">
<div class="left"></div>
<div class="center">
<h2>绝对定位解决方案</h2>
1.这是三栏布局的浮动解决方案; 2.这是三栏布局的浮动解决方案;
3.这是三栏布局的浮动解决方案; 4.这是三栏布局的浮动解决方案;
5.这是三栏布局的浮动解决方案; 6.这是三栏布局的浮动解决方案;
</div>
<div class="right"></div>
</article>
</section>
flexbox 布局
<section class="layout flexbox">
<style>
.layout.flexbox {
margin-top: 110px;
}
.layout.flexbox .left-center-right {
display: flex;
}
.layout.flexbox .left {
width: 300px;
background: red;
}
.layout.flexbox .center {
flex: 1;
background: yellow;
}
.layout.flexbox .right {
width: 300px;
background: blue;
}
</style>
<h1>三栏布局</h1>
<article class="left-center-right">
<div class="left"></div>
<div class="center">
<h2>flexbox解决方案</h2>
1.这是三栏布局的浮动解决方案; 2.这是三栏布局的浮动解决方案;
3.这是三栏布局的浮动解决方案; 4.这是三栏布局的浮动解决方案;
5.这是三栏布局的浮动解决方案; 6.这是三栏布局的浮动解决方案;
</div>
<div class="right"></div>
</article>
</section>
表格布局
<section class="layout table">
<style>
.layout.table .left-center-right {
width: 100%;
height: 100px;
display: table;
}
.layout.table .left-center-right > div {
display: table-cell;
}
.layout.table .left {
width: 300px;
background: red;
}
.layout.table .center {
background: yellow;
}
.layout.table .right {
width: 300px;
background: blue;
}
</style>
<h1>三栏布局</h1>
<article class="left-center-right">
<div class="left"></div>
<div class="center">
<h2>表格布局解决方案</h2>
1.这是三栏布局的浮动解决方案; 2.这是三栏布局的浮动解决方案;
3.这是三栏布局的浮动解决方案; 4.这是三栏布局的浮动解决方案;
5.这是三栏布局的浮动解决方案; 6.这是三栏布局的浮动解决方案;
</div>
<div class="right"></div>
</article>
</section>
网格布局
<section class="layout grid">
<style>
.layout.grid .left-center-right {
width: 100%;
display: grid;
grid-template-rows: 100px;
grid-template-columns: 300px auto 300px;
}
.layout.grid .left-center-right > div {
}
.layout.grid .left {
width: 300px;
background: red;
}
.layout.grid .center {
background: yellow;
}
.layout.grid .right {
background: blue;
}
</style>
<h1>三栏布局</h1>
<article class="left-center-right">
<div class="left"></div>
<div class="center">
<h2>网格布局解决方案</h2>
1.这是三栏布局的浮动解决方案; 2.这是三栏布局的浮动解决方案;
3.这是三栏布局的浮动解决方案; 4.这是三栏布局的浮动解决方案;
5.这是三栏布局的浮动解决方案; 6.这是三栏布局的浮动解决方案;
</div>
<div class="right"></div>
</article>
</section>
未知宽高元素水平垂直居中
<div class="father">
<div class="son"></div>
</div>
//第一种
<style>
.father {
position: relative;
width: 500px;
height: 500px;
background-color: red;
}
.son {
position: absolute;
margin: auto;
top: 0;
left: 0;
bottom: 0;
right: 0;
width: 300px;
height: 300px;
background-color: blue;
}
</style>
//第二种
<style>
.father {
position: relative;
}
.son {
margin: auto;
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
}
</style>
//第三种
<style>
.father {
display: -webkit-flex;
align-items: center;
justify-content: center;
}
.son {
margin: auto;
}
</style>
//第四种,用表格布局
<div class="pe">
<div class="he">
<div class="she"></div>
</div>
</div>
<style>
.pe {
display: table;
width: 50%;
height: 30%;
position: absolute;
}
.he {
display: table-cell;
vertical-align: middle;
text-align: center;
}
.she {
width: 50%;
height: 30%;
display: inline-block;
}
</style>
//第五种,行内块元素
<div class="wrap">
<b class="vamp"></b>
<div class="test">行内块元素</div>
<div>
<style>
.vamp{
width:0;
height:100%;
vertical-align:middle;
}
.test{
background:"blue";
display:inline-block;
}
</style>
</div>
</div>