1、float
<!DOCTYPE html>
<html lang="zh">
<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>三栏自适应常用布局</title>
<style type="text/css">
.p {
overflow: hidden;
}
.left {
float: left;
width: 100px;
background: red;
}
.middle {
margin: 0 100px;
background: yellow;
}
.right {
float: right;
width: 100px;
background: blueviolet;
}
</style>
</head>
<body>
<div class="p">
<div class="left">
left
</div>
<div class="right">
right
</div>
<div class="middle">
middle
</div>
</div>
</body>
</html>
2、flex
<!DOCTYPE html>
<html lang="zh">
<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>三栏自适应常用布局</title>
<style type="text/css">
.p {
display: flex;
}
.left {
width: 100px;
background: red;
}
.middle {
flex: 1;
background: yellow;
}
.right {
width: 100px;
background: blueviolet;
}
</style>
</head>
<body>
<div class="p">
<div class="left">
left
</div>
<div class="middle">
middle
</div>
<div class="right">
right
</div>
</div>
</body>
</html>
3、grid
<!DOCTYPE html>
<html lang="zh">
<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>三栏自适应常用布局</title>
<style type="text/css">
.p {
display: grid;
grid-template-columns: 100px auto 100px;
}
.left {
background: red;
}
.middle {
background: yellow;
}
.right {
background: blueviolet;
}
</style>
</head>
<body>
<div class="p">
<div class="left">
left
</div>
<div class="middle">
middle
</div>
<div class="right">
right
</div>
</div>
</body>
</html>
4、table布局（不建议使用）