<!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>外部样式表</title>
<link rel="stylesheet" href="style.css">
</head>
<body>
<div>来呀~快活呀,反正有大把时间...</div>
</body>
</html>
/* 这css文件里面只有样式没有标签 */
div {
color: pink;
}