jiankangfuwu/Login.aspx

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<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Login.aspx.cs" Inherits="Login" %>

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>欢迎登录后台管理系统</title>
<link href="css/style.css" rel="stylesheet" type="text/css" />
<script language="JavaScript" src="js/jquery.js"></script>
<script src="js/cloud.js" type="text/javascript"></script>

<script language="javascript">
    $(function () {
        $('.loginbox').css({ 'position': 'absolute', 'left': ($(window).width() - 692) / 2 });
        $(window).resize(function () {
            $('.loginbox').css({ 'position': 'absolute', 'left': ($(window).width() - 692) / 2 });
        })
    });  
</script> 

</head>

<body style="background-color:#1c77ac; background-image:url(images/light.png); background-repeat:no-repeat; background-position:center top; overflow:hidden;">
 <form id="form1" runat="server">
    <div id="mainBody">
      <div id="cloud1" class="cloud"></div>
      <div id="cloud2" class="cloud"></div>
    </div>  
    <div class="loginbody">
    <div class="loginbox">  
    <ul>
    <li>
        <asp:TextBox ID="zhanghao"  runat="server" class="loginuser"  placeholder="登录账号"  onclick="JavaScript:this.value=''"></asp:TextBox></li>
    <li><asp:TextBox ID="mima" runat="server" class="loginpwd"  placeholder="登录密码"  onclick="JavaScript:this.value=''" TextMode="Password"></asp:TextBox>
    </li>
     <li>
         <asp:Button ID="Button1" class="loginbtn" runat="server" Text="登录" 
             onclick="Button1_Click" />
    </li>
    </ul>
    </div>
    </div>   
    </form>  
</body>
</html>