Edit The Code:
See Result »
Try it Yourself - ©
w3big.com
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>本教程(w3big.com)</title> </head> <body> <img src="logo.png" alt="W3Cschool.cc" width="336" height="69" longdesc="w3s.txt"> <p>HTML5 不支持 longdesc 属性。</p> </body> </html>