Websites looks different in different browsers

[saritha pulluri]

I get different outputs in different browsers.

Please help me to find a solution.

<%@ Page Language="C#" AutoEventWireup="true"  CodeFile="Default.aspx.cs" Inherits="_Default" %>
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="ajax" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>Untitled Page</title>
    <link href="StyleSheet.css" rel="stylesheet" type="text/css" />
</head>
<body>
    <form id="form1" runat="server">
    <div>
    
    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
        <asp:Button ID="btnview" runat="server" Text="view" onclick="btnview_click"/>
        <asp:LinkButton ID="onylforshow" runat="server"></asp:LinkButton>
        <asp:ScriptManager ID="ScriptManager1" runat="server">
    </asp:ScriptManager>
       <%-- ---------------------------------------------------------------------------------------------%>
       <asp:Panel ID="pnlmodalpopup" runat="server" Style="display:" CssClass="modalPopup"
                       Height="550px" Width="850px" BackColor="White" Direction="LeftToRight" 
                       BorderColor="Black" BorderWidth="2px" >
       
       
        <asp:Button ID="btncancel" runat="server" BackColor="White" BorderColor="White" 
            BorderStyle="Solid" Font-Bold="True" Font-Names="Tahoma" Font-Size="14px" 
            ForeColor="Black" Text="X" Width="30px" style="margin-left: 816px" />
          <br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /> 
            <hr style="color: #3399FF" />
            <br /><br /><br />
            <hr style="color:Green" />
             <br /><br /><br />
            <hr style="color: Red" />
            <br /><br /><br />
            <hr style="color:Green" />
             <br /><br /><br />
            </asp:Panel>
               
               
               
                <ajax:modalpopupextender ID="mpeMsgPopup" runat="server" 
          TargetControlID="onylforshow" PopupControlID="pnlmodalpopup" BackgroundCssClass="modalBackground"  DropShadow="false" 
         EnableViewState="true">
    </ajax:modalpopupextender>
    
         
    </div>
    
    </form>
</body>
</html>

[Frinavale]

Consider using CSS instead of HTML <br> elements an &nbsp; to specify how your page looks. This will most likely fix your problem.