.nav-link.active {
  text-decoration: underline;
}

.placeholder-box {
  height: 220px;
  background-color: #e9ecef;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #6c757d;
  font-weight: bold;
  border-bottom: 1px solid #ddd;
}

.navbar-brand {
  letter-spacing: 1px;
}

.nav-link.active {
  text-decoration: underline;
  font-weight: bold;
}