#main_contents .style .main .no_box .inner:nth-of-type(1) {
	top: 22%;
	right: 10%;
	width: 30%;
}
#main_contents .style .main .no_box .inner:nth-of-type(2) {
	top: 34%;
	right: 4%;
	width: 35%;
}
#main_contents .style .main .no_box .inner:nth-of-type(3) {
	top: 40%;
	left: 4%;
	width: 30%;
}
#main_visual .by {
	background: url("../img/by_main_spb.jpg") no-repeat top left;
	background-size: cover;
}

@media only screen and (min-width: 769px)  {
	#main_visual .by {
		background: url("../img/by_main_pcb.jpg") no-repeat top left;
		background-size: cover;
	}
}