方法一：采用固定定位的方法
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<style>
* {
margin: 0;
padding: 0;
}
.box {
position: fixed;
top: 0;
bottom: 0;
left: 0;
right: 0;
}
.box .box1 {
width: 200px;
position: fixed;
top: 0;
bottom: 0;
left: 0;
background: pink;
}
.box .box2 {
position: fixed;
top: 0;
bottom: 0;
left: 200px;
right: 0;
background: #ccc;
}
</style>
</head>
<body>
<div class="box">
<!-- .box$*2 -->//快捷键
<div class="box1"></div>
<div class="box2"></div>
</div>
</body>
</html>2.采用bfc以及宽高自适应的方法
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<style>
* {
margin: 0;
padding: 0;
}
html,
body {
height: 100%;
}
.left {
width: 100px;
background: pink;
height: 100%;
float: left;
}
.right {
height: 100%;
background: #111;
overflow: hidden;
}
</style>
</head>
<body>
<div class="left"></div>
<div class="right"></div>
</body>
</html>