@charset "utf-8";
#tb{
	display:grid;
	grid-template-columns:calc(25% - 90px/4) calc(25% - 90px/4) calc(25% - 90px/4) calc(25% - 90px/4);
	column-gap:30px;
	row-gap:30px;
	width:auto;
	height:auto;
	margin:auto;
}
@media (max-width:767px){
	#tb{
		grid-template-columns:calc(50% - 10px/2) calc(50% - 10px/2);
		column-gap:10px;
		row-gap:10px;
		margin-top: 20px;
	}
}
.tb_item{
	width:auto;
	height:auto;
	overflow:hidden;
	overflow:hidden;
	display:block;
	transition:all 0.4s;
}

.tb_tb{
	width:auto;
	height:auto;
	overflow:hidden;
	display:block;
	background-color:#fff;
	position: relative;
}

a.tb_name{
	display:block;
	width:auto;
	height:auto;
	overflow:hidden;
	margin:auto;
	margin-top: 10px;
	margin-bottom: 10px;
}

a.tb_pic{
	display:block;
	width:auto;
	height:auto;
	position:relative;
	background-size: cover;
	padding-bottom: 75%;
	background-color: #f5f5f5;
}