:css

.simple_captcha{border: 1px solid #ccc; padding: 5px !important;}
.simple_captcha,
.simple_captcha div{display: table;}
.simple_captcha .simple_captcha_field,
.simple_captcha .simple_captcha_image{
  border: 1px solid #ccc;
  margin: 0px 0px 2px 0px !important;
  padding: 0px !important;
}
.simple_captcha .simple_captcha_image img{
  margin: 0px !important;
  padding: 0px !important;
  width: 110px !important;
}
.simple_captcha .simple_captcha_label{font-size: 12px;}
.simple_captcha .simple_captcha_field input{
  width: 150px !important;
  font-size: 16px;
  border: none;
  background-color: #efefef;
}

.simple_captcha

.simple_captcha_image= simple_captcha_options[:image]
.simple_audio_captcha= simple_captcha_options[:audio]
.simple_captcha_field= simple_captcha_options[:field]
.simple_captcha_label= simple_captcha_options[:label]
.simple_captcha_refresh_button= simple_captcha_options[:refresh_button]