@import url("css/huan.css");
			@import url("css/square.css");
/*.相当于下面的class*/
			.bgg>img {
				transition-property: all;
				transition-duration: 0.5s;
			}
			.bgg>img:nth-child(2){
				transition-delay: 0.5s;
			}
			.bgg>img:nth-child(3){
				transition-delay: 1s;
			}
			.bgg>img:nth-child(4){
				transition-delay: 1.5s;
			}
			.bgg>img:nth-child(5){
				transition-delay: 2s;
			}
			.bgg>img:nth-child(6){
				transition-delay: 2.5s;
			}
			.bgg>img:nth-child(7){
				transition-delay: 3s;
			}
			.bgg>img:nth-child(8){
				transition-delay: 3.5s;
			}
			.bgg>img:nth-child(8){
				transition-delay: 4s;
			}
			.bgg>img:nth-child(10){
				transition-delay: 4.5s;
			}
			.bgg>img:nth-child(11){
				transition-delay: 5s;
			}
			.bgg>img:nth-child(12){
				transition-delay: 5.5s;
			}