Look like there is issue with z-index

First add z-inde here

#navbar {
  overflow: hidden;
  position: sticky;
  top: 0;
  z-index: 1000;
  background: white;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

second put carousel container less z-index, likely be z-index: 1;