.main_window  { padding: 8px }
.blue_cell  { background-color: #337092 }
.main_text  { color: black; font-family: Arial, Helvetica, Geneva, Swiss, SunSans-Regular; text-align: justify; padding: 8px 25px 8px 17px }
.navigation_padding { padding: 0px 15px 0px 24px }
.net_screen { background: url(images/net.jpg) no-repeat fixed 5px top }