1.padding属性用于设置内边距，即边框与内容之间的距离
2.代码：
<!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>盒子模型之内边距</title>
<style>
div{
width: 200px;
height: 200px;
background-color: pink;
/* 距离左侧边距20px */
padding-left: 20px;
/* 距离上边距30px */
padding-top: 30px;
}
</style>
</head>
<body>
<div>
盒子内容是content 盒子内容是content 盒子内容是content 盒子内容是content
</div>
</body>
</html>3.运行效果：
