1.flex方式
<!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>
<style>
.box {
display: flex;
justify-content: center;
height: 200px;
}
.left {
width: 200px;
background-color: red;
height: 100%;
}
.content {
background-color: yellow;
flex: 1;
}
.right {
width: 200px;
background-color: green;
}
</style>
</head>
<body>
<div class="box">
<div class="left"></div>
<div class="content"></div>
<div class="right"></div>
</div>
</body>
</html>
2.绝对定位方式
<!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>
<style>
.box {
position: relative;
height: 200px;
}
.left {
width: 200px;
background-color: red;
left: 0;
height: 100%;
position: absolute;
}
.content {
background-color: yellow;
left: 200px;
right: 200px;
height: 100%;
position: absolute;
}
.right {
width: 200px;
background-color: green;
right: 0;
height: 100%;
position: absolute;
}
</style>
</head>
<body>
<div class="box">
<div class="left"></div>
<div class="content"></div>
<div class="right"></div>
</div>
</body>
</html>
3.浮动方式
<!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>
<style>
.box {
height: 200px;
}
.left {
width: 200px;
background-color: red;
float: left;
height: 100%;
}
.content {
background-color: yellow;
height: 100%;
}
.right {
width: 200px;
background-color: green;
float: right;
height: 100%;
}
</style>
</head>
<body>
<div class="box">
<div class="left"></div>
<div class="right"></div>
<div class="content"></div>
</div>
</body>
</html>
