Why do we use pseudo-classes in CSS?

A specific state of an element is specified by a pseudo-class.

It can be utilised, for instance, to:

            When a user hovers their mouse over an element, it styles links that have been visited and those that have not Style as a component when it is highlighted.

In CSS, a pseudo class is used to specify an element's unique state. It can be used in conjunction with a CSS selector to add a state-based impact to already-existing items. Changing the style of an element, for instance, when a user hovers over it or clicks a link. Pseudo Classes in CSS can be used for all of these things.