div, li { background-color: transparent ;}div > .bg {position: fixed;top:0;left:0;z-index: -1;width: 100%;height: 100%;background: url('https://t1.daumcdn.net/cafeattach/1Y9M4/63f7b334f0b7e16fd0c554b0d3efd89a863ce123') center / cover;opacity: 0.3;}
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