.img_re {
	max-width: 35%;
	height: auto;
	float:right;
	margin-left:20px;
	margin-bottom:10px;
	margin-top:15px;
}
.img_li {
	max-width: 30%;
	height: auto;
	float:left;
	margin-right:20px;
	margin-bottom:5px; 
	margin-top:15px;
}