.hui-A {
  font-weight: bold;
  text-decoration: none;
  color: inherit;
  position: relative;
  cursor: pointer;

  &:after {
    transition: all 160ms ease-out;
    content: '';
    position: absolute;
    bottom: -2px;
    display: block;
    left: 0;
    right: -0;
    background-color: $green;
    height: 0;
    transform: scaleX(0);
  }

  &:hover:after {
    height: 1px;
    transform: scaleX(1);
  }
}