input:not([type="file"]).error,
textarea.error,
select.error {
  border: 1px solid red !important;
}

input:not([type="file"]).no-error,
textarea.no-error,
select.no-error {
  border: 1px solid green !important;
}

div.error-field {
  color: red;
  font-size: small;
}