RUNOOB.COM
源代码：
点击运行
<html> <head> <meta charset="utf-8"> <title>电脑学习网教程(runoob.com)</title> <style type="text/css"> p { word-spacing:30px; } </style> </head> <body> <p> This is some text. This is some text. </p> </body> </html>
运行结果