#contents02_left .shisetsu {
	width: 500px;
	margin-bottom: 10px;
}
.shisetsu #left_300 {
	float: left;
	width: 300px;
	height: 225px;
	margin-left: 20px;
}
.shisetsu #right_140 {
	float: right;
	width: 140px;
	margin-right: 20px;
	height: 225px;
}
.shisetsu #left_140 {
	float: left;
	height: 225px;
	width: 140px;
	margin-left: 20px;
}
.shisetsu #right_300 {
	float: right;
	height: 225px;
	width: 300px;
	margin-right: 20px;
}
.margin_b15 {
	margin-bottom: 15px;
}