.tnt-row {
  position: relative;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
}
.tnt-row label {
  color: #333;
  font-weight: 400;
}
.tnt-row label > span {
  display: block;
  margin-bottom: 10px;
}
.tnt-row-1 .tnt-col {
  width: 100%;
  padding: 0.5px;
}
.tnt-row-2 .tnt-col {
  width: 50%;
  padding: 0.5px;
}
.tnt-row-3 .tnt-col {
  width: 33.33%;
  padding: 0.5px;
}

.select-congtrinh {
  display: none;
}
.select-congtrinh.act {
  display: block;
}

.tnt-error {
  color: #6f1111;
}