1.两栏布局(左固定,右适应)
先写出初始样式和结构
<div class="container">
<div class="left">Lorem ipsum dolor sit amet</div>
<div class="right">Lorem ipsum dolor sit amet</div>
</div>
div {
height: 200px;
color: #fff;
}
- float+margin实现方式
.left {
float: left;
width: 300px;
background-color: #5616;
}
.right {
width: 100%;
margin-left: 300px;
background-color: #438;
}
- position实现方式
.left {
position: absolute;
left: 0;
width: 300px;
background-color: #5616;
}
.right {
width: 100%;
margin-left: 300px;
background-color: #438;
}
- flex
.container {
display: flex;
}
.left {
flex: 0 0 300px;
background-color: #5616;
}
.right {
flex: 1 1;
background-color: #438;
}
右固定,左适应同理。
三栏布局
float + margin方式
<div class="container">
<div class="left">Lorem ipsum dolor sit amet</div>
<div class="right">Lorem ipsum dolor sit amet</div>
<div class="main">Lorem ipsum dolor sit amet</div>
</div>
div {
height: 200px;
color: #fff;
}
.main {
width: 100%;
margin-left: 300px;
margin-right: 100px;
background-color: #554;
}
.left {
float: left;
width: 300px;
background-color: #5616;
}
.right {
float: right;
width: 100px;
background-color: #438;
}
position实现方式
.main {
width: 100%;
margin-left: 300px;
margin-right: 100px;
background-color: #554;
}
.left {
position: absolute;
left: 0px;
width: 300px;
background-color: #5616;
}
.right {
position: absolute;
right: 0px;
width: 100px;
background-color: #438;
}
以上这些实现方式,虽然实现了但还不够好。因为main是主要的显示区域,所以我们应该先加载它再加载其它的地方。
grid实现方式
.container {
display: grid;
grid-template-columns: 300px auto 100px; //列的宽度
}
.main {
grid-row: 1; //第几行
background-color: #554;
}
.left {
grid-row: 1; //第几行
background-color: #5616;
}
.right {
grid-row: 1; //第几行
background-color: #438;
}
3.垂直居中
position + margin实现(1)
<div class="container">
<div class="content"></div>
</div>
.container {
position: relative;
width: 500px;
height: 500px;
background-color: #5465;
}
.content {
position: absolute;
left: 50%;
top: 50%;
width: 200px;
height: 200px;
margin-left: -100px;
margin-top: -100px;
background-color: #6465;
}