.navLink {
  position: relative;
  display: inline-flex;
  align-items: center;
  transition: color 0.15s ease;
}

.navLink::after {
  content: '';
  position: absolute;
  right: 0;
  bottom: -4px;
  left: 0;
  height: 1px;
  background-color: #E8C88E; /* sand */
  opacity: 0;
  transition: opacity 0.15s ease;
}

.navLink:hover::after,
.navLink.active::after {
  opacity: 1;
}