#explan0{
	width: 600px;
	padding: 50px;
}

#explan1{
	width: 100%;
}

#explan2{
	width: 100%;
}

#explan2 > div:nth-child(3){
	margin-top: 20px;
}

#explan2 > div.link_box > a:nth-child(2){
	width: 550px;
}

#explan2 > div:nth-child(3) > a:nth-child(2) > div:nth-child(1){
	width: auto;
	height: auto;
}

#explan2 > div:nth-child(3) > a:nth-child(3) > div:nth-child(1){
	width: 870px;
	height: auto;
}

#explan2 > div:nth-child(3) > a:nth-child(4) > div:nth-child(1){
	width: 870px;
	height: auto;
}

#explan2 > div:nth-child(3) > iframe:nth-child(5){
	margin-top: 20px;
	margin-bottom: 50px;
	margin-right: auto;
	margin-left: auto;
}

#explan3{
	width: 100%;
}

#explan4{
	width: 100%;
}

#explan4 ol{
	list-style: none;
}

@media screen and (max-width: 1100px){
	#explan2 > div.link_box > a:nth-child(2){
		width: auto;
	}

	#explan2 > div:nth-child(3) > a:nth-child(2) > div:nth-child(1){
		width: 300px;
	}

	#explan2 > div:nth-child(3) > a:nth-child(3) > div:nth-child(1){
		width: 300px;
	}
	
	#explan2 > div:nth-child(3) > a:nth-child(4) > div:nth-child(1){
		width: 300px;
	}

	#explan2 > div:nth-child(3) > a:nth-child(2) > div:nth-child(1) > div:nth-child(1){
		margin-left: auto;
	}

	#explan2 > div:nth-child(3) > iframe:nth-child(5){
		width: 280px;
		height: 200px;
	}
}