.captcha {
   border: 1px solid silver;
   font-family: Arial, Verdana, Nimbus;
   font-size: 10pt;
   color: black;
   background-color: #f0f8ff;
   display: none;
   width: 64px;
   text-transform: uppercase;
}
.captcea {
   border: 1px inherit;
}