.col_3-main{
	width: 100%;
	display: flex;
	flex-wrap: wrap;
}
.col_3-main > div{
	width: 33.33333%;
	padding: 5px;
}
.col_3-main > div > div{
	height: 100%;
	padding: 0px; 
	position: relative;
	overflow: hidden
}
@media screen and (max-width: 960px) {
	.col_3-main > div{
		width: 50%;
	}
}
@media screen and (max-width: 480px) {
	.col_3-main > div{
		width: 100%;
	}
}