.vtx-ui-input-error,
.vtx-ui-input-normal {
  display: inline-block;
  position: relative;
  padding-bottom: 18px;
}
.vtx-ui-input-error input {
  border-color: red;
}
.vtx-ui-input-error:after {
  content: attr(data-errormsg);
  color: red;
  display: block;
  font-size: 10px;
  line-height: 18px;
  height: 18px;
  position: absolute;
  left: 0;
  bottom: 0;
}