上下布局
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<style>
*{
padding: 0;
margin: 0;
}
.main{
display: flex;
flex-direction: column;
height: 100vh;
}
.main-head{
flex-shrink: 0;
background-color: aqua;
}
.main-content{
flex: auto;
background-color: aquamarine;
}
</style>
<body>
<div class="main">
<div class="main-head">head</div>
<div class="main-content">content</div>
</div>
</body>
</html>
上中下布局
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<style>
*{
padding: 0;
margin: 0;
}
body{
display: flex;
height: 100vh;
width: 100%;
flex-direction: column;
}
.head{
flex: 0 0 auto;
background: #000;
color: #fff;
}
.main{
flex: 1 0 auto;
background-color: azure;
}
.foot{
flex: 0 0 auto;
background-color: rgb(0, 0, 0);
color: #fff;
}
</style>
<body>
<div class="head">head</div>
<div class="main">main</div>
<div class="foot">footer</div>
</body>
</html>
