*{
	padding: 0;
	margin: 0;
}
a {
	color: inherit;
	font: inherit;
	outline: none;
	text-decoration: none;
}
i,
em,
b {
	font-style: normal;
}

.fl {
	float: left;
}

.fr {
	float: right;
}

.clearfix::after {
	content: "";
	display: block;
	width: 0;
	height: 0;
	visibility: hidden;
	clear: both;
}

.container {
	width: 1200px;
	margin: 0 auto;
	position: relative;
}

.flex_center {
	display: -webkit-box;
	display: -ms-flexbox;
	display: -webkit-flex;
	display: flex;
	-webkit-box-pack: center;
	-ms-flex-pack: center;
	-webkit-justify-content: center;
	justify-content: center;
	-webkit-box-align: center;
	-ms-flex-align: center;
	-webkit-align-items: center;
	align-items: center;
}


.line_txt_1 {
	overflow: hidden;
	text-overflow: ellipsis;
	display: -webkit-box;
	-webkit-line-clamp: 1;
	-webkit-box-orient: vertical;
}

.line_txt_2 {
	overflow: hidden;
	text-overflow: ellipsis;
	display: -webkit-box;
	-webkit-line-clamp: 2;
	-webkit-box-orient: vertical;
}

.line_txt_3 {
	overflow: hidden;
	text-overflow: ellipsis;
	display: -webkit-box;
	-webkit-line-clamp: 3;
	-webkit-box-orient: vertical;
}

.line_txt_4 {
	overflow: hidden;
	text-overflow: ellipsis;
	display: -webkit-box;
	-webkit-line-clamp: 4;
	-webkit-box-orient: vertical;
}

/* header start */
.footer{
	height: 509px;
	background-color: #000000;
}
.main_box{
	min-height: calc(100vh - 117px);
}
/* 适配 */