선택자(Selector)는 CSS에서 HTML 요소를 선택하여 스타일을 적용하는 데 사용되는 패턴입니다. 선택자는 HTML 문서의 요소를 식별하기 위해 사용되며, 해당 요소에 스타일 규칙을 적용할 수 있습니다.
ID와 CLASS는 HTML 요소에 고유한 식별자를 부여하여 스타일이나 스크립트에서 해당 요소를 선택하고 조작하는 데 사용되는 속성입니다.
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