텍스트 가운데 정렬, 이미지 어둡게 하기

1) 텍스트 가운데 정렬

css

	/*3개가 붙어다님*/
	background-image: url("https://movie-phinf.pstatic.net/20210715_95/1626338192428gTnJl_JPEG/movie_image.jpg");
	background-position: center;
	background-size: cover;

	/*4개가 붙어다님*/
	flex-direction: column;
	justify-content: center;
	align-items: center;

2) 이미지 어둡게 하기

background-imge : url("")

url("") 앞에 linear-gradient(0deg, rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)) 추가

background-image: linear-gradient(0deg, rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url("https://movie-phinf.pstatic.net/20210715_95/1626338192428gTnJl_JPEG/movie_image.jpg");