selectors

Pseudo-classes select elements based on state like :hover, :focus, :active, and :visited. I use :nth-child() and :nth-of-type() for pattern-based selection. The :first-child, :last-child, and :only-child target specific positions. Form pseudo-classes

CSS specificity determines which styles apply when multiple rules target the same element. I calculate specificity as (inline, IDs, classes/attributes/pseudo-classes, elements/pseudo-elements). Inline styles have highest specificity at 1000. ID select