.products_content-box{
width: 80%;
max-width: 1100px;
border: 1px solid #333;
padding: 60px 5vw;
background-color: #FFF;
}

.products_content-box > ul{
width: 100%;
display: -webkit-flex;
display: flex;
-webkit-flex-wrap: wrap;
flex-wrap: wrap;
list-style: none;
padding: 0;
}

.products_content-box > ul li{
display: block;
width: 30%;
margin: 0 5% 0 0;
}

.products_content-box > ul li:nth-of-type(3n){
margin-right: 0;
}

.products_content-box > ul li:nth-of-type(n+4){
margin-top: 30px;
}

.products_content-box > ul li a,
.products_content-box > ul li a img{
display: block;
width: 100%;
margin: 0;
}



@media (max-width: 640px){

	.products_content-box{
	width: 90%;
	}

	.products_content-box > ul li,
	.products_content-box > ul li:nth-of-type(3n){
	display: block;
	width: 48%;
	margin: 0 4% 0 0;
	}

	.products_content-box > ul li:nth-of-type(2n){
	margin-right: 0;
	}

	.products_content-box > ul li:nth-of-type(n+3){
	margin-top: 30px;
	}

}