.hover-underline {
  font-size: 1rem;
  color: #000000;
  position: relative;
  display: inline-block;
  font-family: cursive;
}

.hover-underline::after, .hover-underline::before {
  content: '';
  position: absolute;
  width: 100%;
  height: 2px;
  background: linear-gradient(to right, #ff0000, #00ffff);
  bottom: -2px;
  left: 0;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.4s ease-out;
  color: #f57c14;
}

.hover-underline::before {
  top: -2px;
  transform-origin: left;
}

.hover-underline:hover::after, .hover-underline:hover::before {
  transform: scaleX(1);
}

.hover-underline:hover {
  color: #f57c14;
}