Specificity is a concept in CSS that determines which rule takes precedence when there are conflicting styles for the same element.CSS uses a scoring system where the more specific a selector is, the higher its score and the rule with the higher score wins.The specificity hierarchy in CSS is: inline styles > IDs > classes/attributes > elements.In case of a tie, the rule that appears later in the CSS file wins, and the !important declaration overrides almost every other rule.