.index_left {
	width: 260px;
	.index_left-box{background: #fcfcfc;}
	.index_category{
		border-bottom: 1px solid #e9e9e9;
		.item {
			color: #656a75;
			img{width: 22px; display: block;}
			&:hover{background: #f2f3f5; color: #252b38;}
			&.on{background: #f2f3f5; color: #252b38;}
		}
	}
	.index_information{
		color: #a8adb6;line-height: 1.8;
	}
}
.index_center {
	min-height: 800px;
	flex: 1; width: 0;
	.index_topic {
		.topic_list{

 -moz-column-count:3; /* Firefox */
-webkit-column-count:3; /* Safari 和 Chrome */
column-count:3;
 -moz-column-gap: 15px;
 -webkit-column-gap: 15px;
column-gap: 15px;
			.item{
				box-shadow: 0 0 7px 1px #f4f4f4;
				display: block;
				border-radius: 5px;
				overflow: hidden;
				margin-bottom: 15px;
				-moz-page-break-inside: avoid;
				-webkit-column-break-inside: avoid;
				break-inside: avoid;
				.info{
					.title {line-height: 1.6;}
					.leadin {
overflow: hidden;
text-overflow: ellipsis;
display: -webkit-box;
-webkit-box-orient: vertical;
-webkit-line-clamp: 2;}
				}
				img{width: 100%;}
			}
		}
	}
}