captcha.cellpad {
   padding: 5;
}
captcha.gradientnorepeat {
   background-color: #FFFFFF;
   background-repeat: repeat-x;
   background-position: top center;
}
captcha.imagefloatright {
   float: right;
}
captcha.floatleft {
   float: left;
}
captcha.floatright {
   float: right;
}