@charset "utf-8";
#tb{
	display:grid;
	grid-template-columns:calc(25% - (60px/4)) calc(25% - (60px/4)) calc(25% - (60px/4)) calc(25% - (60px/4));
	column-gap:20px;
	row-gap:20px;
	width:auto;
	height:auto;
	margin:auto;
	overflow:hidden;
}
@media (max-width:767px){
	#tb{
		grid-template-columns:calc(33.3% - (20px/3)) calc(33.3% - (20px/3)) calc(33.3% - (20px/3));
		column-gap:10px;
		row-gap:10px;
	}
}
@media (max-width:480px){#tb{grid-template-columns:calc(50% - (10px/2)) calc(50% - (10px/2));}}
@media (max-width:280px){#tb{grid-template-columns:auto;}}
.tb_item{
	width:auto;
	height:auto;
	overflow:hidden;
	overflow:hidden;
	display:block;
}
.tb_tb{
	width:auto;
	height:100%;
	overflow:hidden;
	display:block;
	background-color:#fff;
	border:1px solid #eee;
	transition:all 0.4s;
	box-sizing:border-box;
}
.tb_tb:hover{
	border:1px solid #057ddb;
}
a.tb_pic{
	width:auto;
	height:auto;
	padding-bottom:100%;
	overflow:hidden;
	display:block;
	margin:auto;
	position:relative;
}
a.tb_name{
	width:auto;
	height:auto;
	display:block;
	margin:auto;
	overflow:hidden;
	text-align:center;
	margin-top:10px;
	margin-bottom:10px;
}