.side-nav {
  background: #fff;
  border: 1px solid #e5e5e5;
  border-radius: 4px;
}

.nav-level-top {
  background-color: var(--primary-color);
  display: block;
  color: white;
  text-decoration: none;
  font-size: 14px;
  position: relative;
  cursor: pointer;
  text-align: center;
}

.nav-level-top > div {
  width: 100%;
  height: 80px;
  font-size: 32px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.nav-level-1 {
  list-style: none;
  padding: 0;
  margin: 0;
  background-color: #e3e8e9;
}

.nav-item-1 {
  border-bottom: 1px solid #e5e5e5;
  background-color: #e3e8e9;
}
.nav-item-1.active {
  background-color: #a8dff8;
}

.nav-item-1.active > .nav-level-2 {
  display: block;
}
.nav-link-2.active {
  color: var(--primary-color);
  text-decoration: underline;
}

.nav-item-1:last-child {
  border-bottom: none;
}

.nav-link-1 {
  display: block;
  padding: 20px 20px;
  color: #333;
  text-decoration: none;
  font-size: 20px;
  font-weight: 500;
  text-align: center;
}

.nav-item-1:hover {
  background-color: #a8dff8
}

.nav-level-2 {
  list-style: none;
  padding: 0;
  margin: 0;
  display: none;
}

.nav-item-1:hover > .nav-level-2 {
  display: block;
}

.nav-link-2 {
  display: block;
  padding: 16px 20px 16px 20px;
  color: #333;
  text-decoration: none;
  font-size: 20px;
  position: relative;
  cursor: pointer;
  text-align: center;
  background-color: #f1faff;
  text-decoration: underline;
}

.nav-link-2:hover {
  color:var(--primary-color);
  text-decoration: underline;
}

.nav-level-3 {
  list-style: none;
  padding: 0;
  margin: 0;
  display: none;
}

.nav-level-3.active {
  display: block;
}

.nav-level-3 li a {
  display: block;
  padding: 10px 20px 10px 60px;
  color: #888;
  text-decoration: none;
  font-size: 13px;
}

.nav-level-3 li a:hover {
  color: var(--background-color);
}