* {
				margin: 0;
				padding: 0;
			}

			ul,
			li {
				margin: 0;
				padding: 0;
				list-style: none;
			}
			
			.flip-container,
			.front1,
			.back1 {
				width: 283px;
				height: 283px;
			}
			
			.front1,
			.back1 {
				position: absolute;
				top: 0;
				left: 0;
				backface-visibility: hidden;
				-webkit-backface-visibility: hidden;
				transition: 0.6s ease-out;
				-webkit-transition: .6s ease-out;
				transform-style: preserve-3d;
				-webkit-transform-style: preserve-3d;
			}

			.front1 img,
			.back1 img {
				width: 283px;
				height: 283px;
				overflow: hidden;
			}

			.front1 {
				z-index: 2;
				transform: rotateY(0deg);
				-webkit-transform: rotateY(0deg);
			}

			.back1 {
				z-index: 1;
				transform: rotateY(-180deg);
				-webkit-transform: rotateY(-180deg);
			}
			
			.back2 {
				transform: rotateY(0deg);
				-webkit-transform: rotateY(0deg);
				z-index: 2;
			}
			
			.front2 {
				transform: rotateY(180deg);
				-webkit-transform: rotateY(180deg);
				z-index: 1
			}
		

let is1 = true;

document.getElementsByClassName(‘flip-container’)[0].onclick = function(){
if(is1) {
$(this).find(‘.front1’).addClass(‘front2’);
$(this).find(‘.back1’).addClass(‘back2’);
}else{
$(this).find(‘.front1’).removeClass(‘front2’);
$(this).find(‘.back1’).removeClass(‘back2’);
}
is1 = !is1;
}