body{
	/*background: url(./images/bg13.jpg);*/
	background-size: 100%;
}
main ul.ul1{
	display: flex;
	justify-content: space-around;
	flex-wrap: wrap;
}
main ul.ul1 li{
	width: 30%;
}
main ul.ul1 li img{
	width: 280px;
	height: 400px;
	display: block;
}