Css selector nth-of-type

in Css

Css

.scroll-container:nth-of-type(1) {
  background-color: #bdd0c4;
}
.scroll-container:nth-of-type(2) {
  background-color: #f5d2d3;
}
.scroll-container:nth-of-type(3) {
  background-color: #9ab7d3;
}
.scroll-container:nth-of-type(4) {
  background-color: #dfccf1;
}