RUNOOB.COM
源代码：
点击运行
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>电脑学习网教程(runoob.com)</title> <style> img { position:absolute; top:0px; } </style> </head> <body> <img src="logocss.gif" width="95" height="84"> <h1>This is a heading</h1> </body> </html>
运行结果