/* Add a gray right border to all list items, except the last item (last-child) */
*{
  color: green;
  background-color: aquamarine; 
}

/*ul{
  background-color: aqua;
}
*/

li {
  display: inline;
  border-right: 1px solid #bbb;
  color: orange; 
}

li:last-child {
  border-right: none;
}

.active{
  background-color: yellow;
}