body {
  font-family: Verdana;
}
.captchadiv {
  width:320px;
  height:160px;
  background-color:black;
  background-image: linear-gradient(to bottom, #ff903b, #e34c0b);
}
.captchatext {
   width:310px;
  height:37px;
  background-color:white;
  background-image: linear-gradient(to bottom, #f5f6ff, #e8ebfc);
}