.exchangeImg,
			.imgContainer {
				position: relative;
			}
			
			.divSize,
			.imgContainer>img {
				width: 500px;
				height: 300px;
			}
			
			.abPosition,
			.imgContainer>img {
				position: absolute;
			}
			
			.imgContainer>img {
				top: 0px;
				left: 0px;
			}
			
			.imgContainer>img:not(:first-child) {
				display: none;
			}
			
			.pointContainer {
				left: 50%;
				bottom: 10px;
				margin-left: -60px;
			}
			
			.pointContainer>span {
				display: inline-block;
				width: 10px;
				height: 10px;
				margin-left: 5px;
				border: 1px solid gray;
				border-radius: 50px;
				cursor: pointer;
			}
			
			.active {
				background-color: white ;
			}