摘要：<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xml
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>作业</title> </head> <body> <div style="background:red; font-size:14px; width:200px; height:500px; text-align:center;">php中文网</div> <p>欢迎您</p> <p><img src="images/li.png" /></p> <span style="background:#C30">欢迎您欢迎您</span> </body> </html>
批改老师：灭绝师太批改时间：2019-01-06 11:50:40
老师总结：html5开始文档头部声明可以简化了，没必要这么繁琐！
