分割线 <hr>
<hr>标签用来在HTML页面中创建水平分隔线,通常用来分隔内容
<!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">
<title>Title</title>
</head>
<body>
<p>雨天</p>
<hr>
<p>晴天</p>
</body>
</html>