#services-sidebar {
  display: flex;
  flex-direction: column;
}

#services-sidebar a {
  display: block;
  background: #f2f2f2;
  padding: 5px 5px;
  margin-bottom: 8px;
  text-decoration: none;
  color: #222;
  font-weight: 500;
  border-left: 4px solid transparent;
  transition: all 0.3s ease;
}

/* hover effect */
#services-sidebar a:hover {
  background: #e6e6e6;
  border-left: 4px solid #0073aa;
}

/* active page */
#services-sidebar a.active {
  background: #e6e6e6;
  border-left: 4px solid #0073aa;
}