What is nth-child CSS Selectors? To select any element inside your DOM (Document Object Model) there are lots of CSS selectors. And nth-child is one of them, more smarter, handy and useful to use. By nth-child you can select any *th (1st, 2nd, 3rd, 4th........nth) element of your HTML DOM. Let’s see how we can use it: Usage of nth-child in CSS nth-child pseudo-selector define the number-th of your targetted element. i.e: You have a list item like the …