xxxxxxxxxx <head> <link rel="stylesheet" href="2.css"/> <link href='https://font.c2cmalls.com/css?family=Ubuntu' rel='stylesheet' type='text/css'/> <script src="https://ajax.c2cmalls.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script> </head> <body> <div class = "frame"><div id = "button_open_envelope"> 发邮件给我 </div> <div class = "message"> <form method="post" action="contact.php"> <input type="text" name="name" id="name" placeholder=" 姓名* " required> <input type="email" name="电子邮箱" id="email" placeholder=" 电子邮箱* " required pattern="^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,6}$"> <input type="text" name="phone" id="phone" placeholder=" 电话（可选）" autofocus> <textarea name="message" id="messarea" placeholder=" 信息* " required></textarea> <input type="text" name="地址" id="address" style="display: none;"> <input type="submit" value="发送" id="send"> </form> </div> <div class = "bottom"></div> <div class = "left"></div> <div class = "right"></div> <div class = "top"></div> <script src="js/script.js"></script> </div> </body> https://ajax.c2cmalls.com/ajax/libs/jquery/1.11.2/jquery.min.js