플로팅 배너에 탑 버튼 추가하기 (탑 버튼 응용, 고급) - ⓐ  수정본(우측을 기준으로 위치) 

코드 2개 삽입

플로팅 배너 만들기 (고급)

상단이동 스크롤 버튼 만들기 (아래로 스크롤시 생성)

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