源代码
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>编程字典</title> <style> p.error { color: red; } </style> </head> <body> <p>编程字典.</p> <p>爱学习，更爱分享.</p> <p class="error">我不一样.</p> <p>爱学习，更爱分享.</p> <p class="error">我也不一样.</p> </body> </html>
运行结果