@charset "utf-8";
#tb{
	width:auto;
	max-width:1200px;
	height:auto;
	overflow:hidden;
	display:grid;
	grid-template-columns:calc(25% - 15px) calc(25% - 15px) calc(25% - 15px) calc(25% - 15px);
	column-gap:20px;
	row-gap:20px;
	margin:auto;
}
@media (max-width:767px){#tb{grid-template-columns:calc(33.3% - 13px) calc(33.3% - 13px) calc(33.3% - 13px);}}
@media (max-width:480px){#tb{grid-template-columns:auto auto;}}
@media (max-width:280px){#tb{grid-template-columns:auto;}}
.tb_item{
	width:auto;
	height:auto;
	overflow:hidden;
	display:block;
}
a.tb_tb{
	width:auto;
	height:100%;
	display:block;
	background-color:#fff;
	border:1px solid #ddd;
	transition:all 0.4s;
	box-sizing:border-box;
}
.tb_pic{
	width:auto;
	height:250px;
	overflow:hidden;
	display:block;
	margin:auto;
	position:relative;
}
.tb_name{
	width:auto;
	height:auto;
	display:block;
	margin:auto;
	overflow:hidden;
	text-align:center;
	padding:5px;
	font-size:14px;
}