when I write the code the appearance is working fine in the "design tab " but when I run this project is not working fine.Only table row background image is showing but form background image is not showing.
<html lang="en">
<head runat="server">
<title>CITY DETAILS</title>
</head>
<body>
<form runat="server" id="master_form" style="background-image:url(.\images\website.jpg)">
<link rel="Stylesheet" type="text/css" href="StyleSheet_master.css" />
<Table runat="server" Width="100%" class="auto_style1" style="table-layout:fixed;">
<tr>
<td class="header_row">
<img src="images/sunburn.jpg" width="100%" height="250px" alt="Image" />
</td>
</tr>
<tr>
<td align="center">
<asp:ContentPlaceHolder ID="MainContent" runat="server">
</asp:ContentPlaceHolder>
</td>
</tr>
</Table>
</form>
</body>
</html>