.nav-link {
  color: #555;
  font-weight: 500;
  position: relative;
}

.nav-link.active {
  color: #1d4ed8;
  font-weight: 700;
}

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  height: 3px;
  width: 100%;
  background-color: #1d4ed8;
  border-radius: 2px;
}