What are pseudo-classes in CSS?
In CSS, pseudo-classes are used to define a state of an element based on its position, relationship with other elements, or user interaction. They are denoted by a colon (:) followed by the pseudo-class name. Examples of pseudo-classes: 1. :hover - applied when an element is hovered over by a user 2. :active - applied when an element is being clicked or activated 3. :focus - applied when an element receives focus (e.g., when a user clicks on a form input) 4. :visited - applied to links that have been visited by the user 5. :first-child - applied to the first child element of a parent element 6. :last-child - applied to the last child element of a parent element 7. :nth-child(n) - applied to the nth child element of a parent element 8. :disabled - applied to elements that are disabled 9. :enabled - applied to elements that are enabled 10. :checked - applied to checkboxes and radio buttons that are checked Pseudo-classes allow you to apply styles to elements based on their state or ...