li.slide1 {
	background: url(../../images/20shirosai1.jpg) center center / cover no-repeat;
}
li.slide2 {
	background: url(../../images/20shirosai2.jpg) center center / cover no-repeat;
}
li.slide3 {
	background: url(../../images/20shirosai3.jpg) top center / cover no-repeat;
}
li.slide4 {
	background: url(../../images/20shirosai4.jpg) center center / cover no-repeat;
}
li.slide5 {
	background: url(../../images/20shirosai5.jpg) center center / cover no-repeat;
}
li.slide6 {
	background: url(../../images/20shirosai6.jpg) top center / cover no-repeat;
}
li.slide7 {
	background: url(../../images/20shirosai7.jpg) top center / cover no-repeat;
}