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<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>本教程(w3big.com)</title> </head> <body> <form action=""> First name: <input type="text" name="firstname"><br> Last name: <input type="text" name="lastname"> </form> <p><b>注意:</b> 表单本身是不可见的。并且注意一个文本字段的默认宽度是20个字符。</p> </body> </html>