一、基本概念
- 自适应 : 根据不同的设备屏幕大小来自动调整尺寸、大小
- 响应式 : 会随着屏幕的实时变动而自动调整,是一种自适应
二、常用配置
视口标签

<meta
name="viewport"
content="width=device-width,
initial-scale=1.0,
user-scalable=no,
minimum-scale=1.0,
maximum-scale=1.0">
媒体查询
<!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, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
<title>Document</title>
<style>
@media screen and (min-width: 320px) {
html {
font-size: 16px;
}
}
@media screen and (min-width: 375px) {
html {
font-size: 18px;
}
}
@media screen and (min-width: 414px) {
html {
font-size: 20px;
}
}
@media screen and (min-width: 480px) {
html {
font-size: 22px;
}
}
.box {
width: 5rem;
height: 5rem;
background-color: skyblue;
}
</style>
</head>
<body>
<div class="box"></div>
</body>
</html>
使用VSCode插件 : px to rem 插件


