input:focus background-color:#c4c4c4;
<?xml version="1.0" ?> <!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" lang="en" xml:lang="en"> <head> <title>CSS Example</title> <style type='text/css'> input { border:none; background-color:#dddddd;} input:focus { background-color:#c4c4c4;} </style> </head> <body> <form name="frmLogin" action="login.asp" method="post"> User name <input type="text" name="txtUserName" /><br /><br /> Password <input type="password" name="pwdPassword" /><br /><br /> <input type="submit" value="Login" /> </form> </body> </html>