@charset "utf-8";
.cert_list{
	display:grid;
	grid-template-columns:calc(33.3% - (40px/3)) calc(33.3% - (40px/3)) calc(33.3% - (40px/3));
	row-gap:20px;
	column-gap:20px;
	margin:auto;
	width:auto;
	height:auto;
	overflow:hidden;
	margin-top:20px;
	margin-bottom:20px;
}
@media (max-width:767px){
	.cert_list{
		grid-template-columns:calc(50% - (10px/2)) calc(50% - (10px/2));
		row-gap:10px;
		column-gap:10px;
	}
}
.tb_tb{
	display: block;
	width: auto;
	height: auto;
	overflow: hidden;
}
.tb_pic{
	position: relative;
	display: block;
	width: auto;
	height:auto;
	overflow: hidden;
	padding-bottom: 125%;
	border: 1px solid #ddd;
}