<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document</title> </head> <body> <!-- 代码中的回车在页面中是无法显示的 --> 123 456 <p>123</p> <p>456</p> </body> </html>
