nav {
  position: sticky;
  top: 0;
  width: 100%;
  background-color: rgb(255, 255, 255);
  color: #1b4332;
  padding: 15px 0;
  text-align: center;
  z-index: 999;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  display: flex;
  justify-content: space-around;
  overflow-x: auto;
  white-space: nowrap;
}


nav a {
    display: inline-block;
  margin: 0 15px;
  text-decoration: none;
  color: #007bff;
  font-weight: bold;
}

nav a:hover {
  text-decoration: underline;
}