@charset "utf-8";
#tb{
	display:grid;
	grid-template-columns:calc(33.3% - (60px/3)) calc(33.3% - (60px/3)) calc(33.3% - (60px/3));
	column-gap:30px;
	row-gap:30px;
	width:auto;
	height:auto;
	margin:auto;
	overflow:hidden;
	margin-bottom:20px;
}

@media (max-width:767px){
	#tb{
		grid-template-columns:calc(50% - (10px/2)) calc(50% - (10px/2));
		padding:10px;
		column-gap:20px;
		row-gap:20px;
	}
}
@media (max-width:280px){#tb{grid-template-columns:auto;}}

a.tb_tb{
	width:auto;
	height:auto;
	overflow:hidden;
	display:block;
	position: relative;
}
a.tb_tb:hover{color:#fff;}
a.tb_tb:before{
	content: "";
	background-color: #000;
	width: 0px;
	height: 100%;
	transition: all 0.4s;
	position:absolute;
	margin: auto;
	left: 0px;
	right: 0px;
	top:0px;
	bottom: 0px;
	z-index: -1;
}
a.tb_tb:hover:before{
	width:100%;
}
.tb_pic{
	width:auto;
	height:auto;
	padding-bottom:100%;
	overflow:hidden;
	display:block;
	margin:auto;
	position:relative;
	background-size:cover;
	background-color: #fff;
}
.tb_name{
	width:auto;
	height:auto;
	display:block;
	margin:auto;
	overflow:hidden;
	text-align:center;
	font-size:14px;
	margin-top: 10px;
	margin-bottom: 10px;
}