.sidebar {
  width: 25%;
  background-color: #f0f0f0;
  border-right: 1px solid #ddd;
  padding: 20px;
  box-sizing: border-box;
}

.sidebar ul {
  list-style-type: none;
  padding: 0;
}

.sidebar ul li {
  margin: 10px 0;
}

.sidebar ul li a {
  text-decoration: none;
  color: #000;
  display: block;
  padding: 10px;
  transition: background-color 0.3s;
}

.sidebar ul li a:hover, .sidebar ul li a.active {
  background-color: #1d6597;
  color: #9bb641;
}

.cards-content {
  width: 75%;
  padding: 20px;
  box-sizing: border-box;
}

.info-card {
  display: none;
}

.info-card.active {
  display: block;
}