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미션 요구 사항
+) step 1~5 적용
추가 수정 사항
명확하게 몇 명의 승객 수가 증가(혹은 감소)하는지 안내하기 위해 승객 추가 감소 버튼의
aria-label
을성인 승객 1 증가
로 수정했습니다.승객 수와
statusMessage
의aria-live
속성을assertive
로 변경하여 스크린 리더가 우선적으로 항목을 읽을 수 있게 했습니다.