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<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>本教程(w3big.com)</title> </head> <body> <table border="1"> <tr> <th id="name" colspan="2">Name</th> </tr> <tr> <th headers="name">Firsname</th> <th headers="name">Lastname</th> </tr> </table> </body> </html>