/* 基础样式 */

body {
	font-size: 16px;
	color: #183067;

	line-height: 25px;
	margin: 0px;
	background: url("../images/bg.jpg") repeat-x;
}

div,
iframe,
img,
form,
h3,
h4,
h5,
h6,
ul,
li,
dl,
dt,
dd,
table,
td,
tr,
p {
	margin: 0px;
	border: 0px;
	padding: 0px;
}

img {
	border: 0
}

h1 {
	font-size: 18px;
	font-family: '黑体';
	color: #02346f;
}

h2 {
	font-size: 18px;
	font-family: '黑体';
	color: #ff0000;
	text-align: center;
	padding-top: 10px
}

h3 {
	margin: 0px;
	font-size: 14px;
	font-family: '宋体';
	color: #183067;
	margin-top: 5px
}

a {
	text-decoration: none;
	color: #183067;
	cursor: pointer;
	outline: 0;
	cursor: pointer;
}

a:hover {
	color: #ff0000
}

ul,
li {
	list-style: none;
}

div,
ul,
li {
	height: auto;
	overflow: hidden;
}

SELECT {
	border: 1px solid #bababa;
	font-size: 16px;
	font-family: "Verdana", "??";
	text-decoration: none;
	padding: 5px;
}


.sbflzs {
	line-height: 24px;
	font-size: 16px;
	color: #dc143c;
}

.mainycnh {
	width: 1280px;
	height: auto;
	margin: 0 auto;
	
}

.ssbk {
	width: 984px;
	height: 450px;
	border: #d2e1f1 0px solid;
	background: #fff;
	text-align: left;
	padding: 5px
}

.ssbk .let {
	width: 146px;
	float: left;
	margin-left: 28px;
	padding-top: 15px;
}

.ssbk .rit {
	width: 800px;
	float: left;
	padding: 5px;
}

.sbfl {
	width: 1194px;
	height: auto;
	min-height: 200px;
	margin-bottom: 5px;
	font-size: 16px;
	background: #fff;
	border: #fbdfdd 1px solid;
}

.sbfl .left {
	width: 384px;
	float: left;
	background: #fff;
}

.sbfl .right {
	width: 783px;
	float: right;
	margin-left: 25px;
	background: #fff;
	height: 100%;
	border: #f0f2f5 1px solid;
	margin-bottom: 25px
}

.sbfl3 .left {
	width: 174px;
	padding-left: 30px;
}

.sbfl3 .right {
	width: 963px;
}

.sbfl3 .left h2 {
	text-align: left;
}

.sbfl3 .sbflnr {
	width: auto;
}

.sbfl3 .sbflnr h1 {
	text-align: center;
	font-size: 24px;
}

.sbfl3 .sbflnr .artinfo {
	text-align: center;
	font-size: 14px;
	color: #999;
	padding-bottom: 15px;
}

.sbfl3 .sbflnr .artcon {
	text-indent: 2em;
}

.sbfl .right .bt {
	width: 1113px;
	height: 38px;
	border-bottom: #fbdfdd 1px solid;
	font-size: 18px;
	font-family: '黑体';
	color: #000000;
	padding: 10px;
	line-height: 35px;
	background: #feefee
}

.right2 {
	width: 1194px;
	background: #fff;
	height: 100%;
	border: #d2e1f1 1px solid;
	margin-bottom: 25px
}

.right2 .bt {
	width: 1174px;
	height: 25px;
	border-bottom: #d2e1f1 1px solid;
	font-size: 18px;
	font-family: '黑体';
	padding: 10px;
	background: #fcfcfc;
}

.ss {
	width: 300px;
	padding: 10px
}

.sbflnr {
	width: 743px;
	padding: 20px;
	margin-bottom: 25px;
	line-height: 35px;
}

.sbflnr2 {
	width: 1154px;
	padding: 20px;
	line-height: 35px
}

.sbflhf {
	border-bottom: #fbdfdd 1px solid;
	height: 40px;
	padding-top: 15px;
	padding-left: 10px;
}

.sbflhf.active a {
	color: #184897;
	color: red;
	padding: 5px
}

.sbfl2 {
	width: 1194px;
	height: auto;
	min-height: 200px;
	margin-bottom: 5px;
	font-size: 16px;
	background: #fff;
	border: #fbdfdd 1px solid;
}

.sbfl2 .lbjs {
	padding: 10px;
	border-bottom: #ebebeb 1px solid;
	text-align: left;
	background: #feefee;
	line-height: 30px;
}

.sbfl2 .xxlbjs {
	width: 1176px;
	float: left;
	padding: 10px;
	border-bottom: #000 5px solid;
	text-align: left;
}

.sbfl2 .left {
	width: 761px;
	float: left;
	padding: 15px;
	background: #fff;
	font-size: 18px;
	line-height: 30px;
}

.sbfl2 .right {
	width: 348px;
	float: left;
	margin-left: 25px;
	margin-bottom: 5px;
	padding: 5px;
	color: #666;
}

.sbfl2 h2 {
	text-align: left;
}

.sydh {
	width: 996px;
	height: 43px;
	border-bottom: 0px solid #d2e1f1;
	border-left: 0px solid #d2e1f1;
	border-right: 0px solid #d2e1f1;
	font-size: 16px;
	font-family: "微软雅黑", "Microsoft YaHei", "宋体";
	color: #000033;
	text-align: center;
	padding-bottom: 5px
}


.leftbox {
	width: 600px;
	float: left;
	padding: 5px;
	background: #ffffff;
}

.rightbox {
	width: 300px;
	float: right;
	margin-left: 8px;
	padding: 10px;
	border: #d2e1f1 1px solid;
	background: #ffffff;
}

.topbar {
	height: 28px;
	background: #333;
	line-height: 28px;
	position: fixed;
	width: 100%;
	z-index: 9999;
}

.topbar .mainycnh ul {
	overflow: hidden;
	padding-right: 20px;
}

.topbar .mainycnh ul li {
	float: left;
	margin-left: 20px;
	margin-right: 5px;
}

.topbar .mainycnh ul li a {
	float: left;
	display: block;
	color: #F0F2F5;
	font-size: 14px;
}

.topbar .mainycnh ul li a img {
	height: 16px;
	display: block;
	float: left;
	position: relative;
	top: 5px;
	margin-right: 5px;
}

.topbar .mainycnh ul li.kefu {
	float: right;
}

.top {
	width: 100%;
	max-width:1280px;
	font-size: 30px;
	margin: 0 auto;

	padding-left: 25px;
	height: 150px;
	color: white;
	position: relative;

}

.top .logo {
	display: inline-block;
	position: relative;
	top: 20px;
	margin-right: 10px;
	height: auto;
}



.top .logo2 {
	display: inline-block;
	position: relative;

	margin-right: 10px;
	height: auto;
}



.top a {
	color: #fff;
	overflow: hidden;
}

.top small {
	display: block;
	font-size: 16px;
	font-weight: normal;
	color: #fff;
	margin-top:10px;
}

.top h1 {
	display: inline-block;
	color: #fff;
	font-size: 40px;
	width: 800px;
	position: relative;
	top: 50px;
}

.top .mqr {
	width: 100px;
	position: absolute;
	right: 20px;
	top: 20px;
	font-size: 14px;
	text-align: center;
}

.top .mqr img {
	display: block;
}

.footbar {
	position: fixed;
	height: 50px;
	background-color: #184897;
	display: none;
	flex-wrap: wrap;
	justify-content: space-between;
	width: 100%;
	z-index: 100;
	bottom: 0;
}

.footbar div {
	width: 50%;
}

.footbar a {
	text-align: center;
	line-height: 50px;
	color: #fff;
	display: block;
}

.footbar a:first-child {
	border-right: rgba(255, 255, 255, 0.5) 1px solid;
}

.footbar a img {
	height: 20px;
	position: relative;
	top: 3px;
}

.search,
.news {
	width: 1280px;
	margin-top: 10px;
	padding: 20px;
	border-radius: 5px;
	margin-bottom: 10px;
	background: #fff;
	-webkit-box-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
	box-shadow: 0 2px 12px rgba(0, 0, 0, 0.1) font-size:20px;
	font-family: 'Microsoft YaHei';
	float: left;
}

.dl {
	clear: both;
	color: red;
	font-size: 16px;
	overflow: hidden;
	padding-top: 20px;
}

.dl img {
	float: left;
	margin-right: 10px;
	width: 600px;
}

.search .le,
.news .le {
	float: left;
	display:none;
}

.news {
	padding-top: 15px;
	padding-bottom: 15px;
}

.news dl {
	width: 30%;
	overflow: hidden;
	border-right: #efefef 1px solid;
	padding-right: 1.5%;
	margin-right: 1.5%;
}

.news dl.nob {
	border: 0;
}

.news dl dt {
	font-size: 14px;
	color: #999;
}

.news dl dd {
	float: left;
	width: 100%;
}

.news dl dd a {
	line-height: 28px;
	display: inline-block;
	float: left;
}

.news dl dd span {
	line-height: 25px;
	display: inline-block;
	float: right;
	color: #BABABA;
}

.news dl dd.more a {
	text-align: right;
	font-size: 12px;
	color: #999;
	
}

.search .ri {
	float: right;
	text-align: left;
}

.search .input {
	height: 34px;
	line-height: 38px;
	border: 1px solid #d9d9d9;
	background-color: #fff;
	padding: 0 10px;
	font-size: 14px;
	float: left;
	margin-right: 5px;
	display: block;
	width:350px;
}

.zj {
	width: 800px;
	text-align: center;
	margin-top: 30px
}

.searchButton {
	width: 120px;
	height: 36px;
	text-align: center;
	font-size: 18px;
	color: #2072b4;
	background: #fff;
	border: #2072b4 1px solid;
	cursor: pointer;
	margin-right: 30px;
	float: left;
}

.searchButton:hover {
	background: #fff
}

.searchButton:active,
.searchButton:visited {
	background: #fff
}

.msearch {
	display: none;
	background: #184897;
	color: #FFFFEE;
	font-size: 14px;
	height: 36px;
	line-height: 36px;
	padding: 0;
	float: left;
	margin-left: 5px;
	overflow: hidden;
	padding: 0 12px;

}

.msearch img {
	width: 24px;
	margin-top: 5px;
}

.cxButton {
	width: 115px;
	height: 36px;
	float: left;
	text-align: center;
	font-size: 18px;
	color: #FFF;
	background: #f03232;
	border: #d2e1f1 0px solid;
	display: block;
	cursor: pointer;
	margin-right: 15px;
	padding-top: 5px
}

.cxButton:hover {
	background: #900a0a
}

.cxButton:active,
.cxButton:visited {
	background: #d2e1f1
}


.ssButton {
	width: 115px;
	height: 36px;
	float: left;
	text-align: center;
	font-size: 18px;
	color: #FFF;
	background: #5cb2f3;
	border: #d2e1f1 0px solid;
	display: block;
	cursor: pointer;
	margin-right: 15px;
	padding-top: 5px;
	margin-bottom: 10px
}

.ssButton:hover {
	background: #3693d6
}

.ssButton:active,
.ssButton:visited {
	background: #5cb2f3
}


.xz {
	width: 984px;
	padding-right: 10px;

	padding-left: 30px;
	padding-top: 2px;
	font-size: 16px;
	font-family: 'Microsoft YaHei';
	float: left;

}

.fldh {
	width: 1280px;
	padding: 22px;
	margin-bottom: 20px;
	line-height: 24px;
	background: #ffffff;
}

.fldh .dw {
	width: 175px;
	padding: 3px 20px;
	float: left;
	font-size: 16px;
	font-family: 'Microsoft YaHei';
}

.fixed-bar .icon,
.fixed-bar .consult-list .tel-icon {
	background: url("../images/js_02.png") no-repeat;
}

.fixed-bar .icon {
	display: block;
	position: absolute;
	top: 50%;
	left: 50%;
	width: 23px;
	height: 12px;
	overflow: hidden;
	margin: -18px 0 0 -12px;
	background-position: right -220px;
	text-indent: -999em;
}

.fixed-bar {
	position: fixed;
	right: 20px;
	bottom: 50px;
	z-index: 50;
	_position: absolute;
	_bottom: auto;
	_top: expression(eval(document.documentElement.scrollTop+document.documentElement.clientHeight-this.offsetHeight-(parseInt(this.currentStyle.marginTop, 10)||0)-(parseInt(this.currentStyle.marginBottom, 10)||0))-30);
}

.fixed-bar .gotop {
	position: relative;
	z-index: 1;
	display: block;
	width: 68px;
	height: 36px;
	overflow: hidden;
	margin: -1px 0 0;
	padding: 32px 0 0;
	border: 1px solid #e6e6e6;
	border-top: 1px dashed #eaeaea;
	background-color: #fff;
	color: #666;
	font: normal 14px/36px "Microsoft YaHei", "\5FAE\8F6F\96C5\9ED1";
	text-align: center;
}

.fixed-bar .share {
	height: 68px;
	overflow: hidden;
	margin: -1px 0 0;
	border: 1px solid #e6e6e6;
}

.fixed-bar .gotop:hover {
	z-index: 10;
	border-color: #2acb6b;
	background-color: #2acb6b;
	color: #fff;
	text-decoration: none;
}

.fixed-bar .gotop:hover .icon {
	background-position: right -251px;
}

.fixed-bar .consult-box {
	border: 1px solid #e6e6e6;
	padding: 10px;
	color: #fff;
}

.fixed-bar .consult-box .consult-header {
	position: relative;
	height: 36px;
	margin: -1px -1px 0;
	background: #2acb6b;
}

.fixed-bar .consult-box .consult-title {
	color: #fff;
	font: normal 16px/36px "Microsoft YaHei", "\5FAE\8F6F\96C5\9ED1";
	text-align: center;
}

.fixed-bar .consult-box .icon {
	display: none;
	top: 0;
	left: -28px;
	width: 28px;
	height: 36px;
	overflow: hidden;
	margin: 0;
	background-position: -80px -530px;
	cursor: pointer;
}

.fixed-bar .consult-box .icon:hover {
	background-position: -110px -530px;
}

.fixed-bar .consult-list {
	margin: 0 2px -1px;
	padding: 9px 0;
	border-bottom: 1px dashed #eaeaea;
	overflow: hidden
}

.fixed-bar .consult-list li {
	padding: 6px 0 6px 23px;
	color: #666;
	font: normal 12px/24px "Microsoft YaHei", "\5FAE\8F6F\96C5\9ED1";
}

.fixed-bar .consult-list span,
.fixed-bar .consult-list a {
	float: left;
	line-height: 24px;
}

.fixed-bar .consult-list span {
	padding-right: 10px;
}

.fixed-bar .consult-list img {
	vertical-align: top;
}

.fixed-bar .wide-bar {
	width: 180px;
	background: #fff;
}

.fixed-bar .wide-bar .share .bds_more {
	width: 148px;
	_width: 146px;
	background-position: -252px -568px;
}

.fixed-bar .wide-bar .share .bds_more:hover {
	background-position: -354px -568px;
}

.fixed-bar .wide-bar .gotop {
	width: 178px;
}

.fixed-bar .consult-list .tel-icon {
	margin-left: -15px;
	padding: 0 0 0 20px;
	background-position: -591px -264px;
}

/*固定的悬浮窗*/
.yb_conct {
	position: fixed;
	z-index: 9999999;
	top: 300px;
	right: -127px;
	cursor: pointer;
	transition: all .3s ease;
}

.yb_bar ul li {
	width: 180px;
	height: 53px;
	font: 16px/53px 'Microsoft YaHei';
	color: #fff;
	text-indent: 54px;
	margin-bottom: 3px;
	border-radius: 3px;
	transition: all .5s ease;
	overflow: hidden;
}

.yb_bar .yb_top {
	background: #9c000e url(../images/rightbar.png) no-repeat 0 0;
}

.yb_bar .yb_phone {
	background: #9c000e url(../images/rightbar.png) no-repeat 0 -57px;
}

.yb_bar .yb_QQ {
	text-indent: 0;
	background: #9c000e url(../images/rightbar.png) no-repeat 0 -113px;
}

.yb_bar .yb_ercode {
	background: #9c000e url(../images/rightbar.png) no-repeat 0 -169px;
}

.hd_qr {
	padding: 0 29px 25px 29px;
}

.yb_QQ a,
.yb_phone a {
	display: block;
	text-indent: 54px;
	width: 100%;
	height: 100%;
	color: #fff;
}

/*版权部分*/
.foot {
	margin: 0px;
	font-size: 16px;
	text-align: center;
	border-top: #cccccc 1px solid;
	padding: 10px;
	background: #184897;
	color: #fff;
	height: 80px;
	margin-top: 30px
}

/* 搜索表格 */
.sch {
	border: #d9d9d9 1px solid;
	border-right: 0;
	border-bottom: 0;
	margin-top: 25px;
}

.sch td,
.sch th {
	border-right: #d9d9d9 1px solid;
	border-bottom: #d9d9d9 1px solid;
	line-height: 32px;
	padding: 5px;
}

#feedbox {
	display: none;
	position: fixed;
	bottom: 140px;
	right: 20px;
	width: 400px;
	height: 370px;
	background-color: #fff;
	border: #DCDCDC 1px solid;
	z-index: 9999;
	box-shadow: 2px 3px 8px rgba(0, 0, 0, 0.2);
}

#feedbox .form-group {
	padding: 10px 20px 5px;
	overflow: hidden;
}

#feedbox .form-group label {
	display: block;
	font-size: 14px;
	color: #333;
	margin-bottom: 5px;
}

#feedbox .form-group input,
#feedbox .form-group textarea {
	display: block;
	border: #DCDCDC 1px solid;
	border-radius: 2px;
	height: 28px;
	line-height: 28px;
	font-size: 14px;
	padding: 3px 10px;
	width: 100%;
	outline: none;
}

#feedbox .form-group textarea {
	height: 80px;
	overflow-y: scroll;
}

#feedbox .form-group a {
	display: inline-block;
	background-color: #184897;
	color: #fff;
	border: none;
	float: right;
	margin-left: 10px;
	font-size: 14px;
	padding: 5px 10px;
	margin-top: 15px;
}

#cartico,
#cartcopy,
#cartreg {
	width: 40px;
	height: 40px;
	border-radius: 50%;
	position: fixed;
	bottom: 80px;
	right: 20px;
	z-index: 999;
	background-color: #184897;
	color: #fff;
	text-align: center;
	line-height: 40px;
	cursor: pointer;
}

#cartico img,
#cartcopy img {
	position: absolute;
	top: 5px;
	left: 50%;
	margin-left: -14px;
}

#cartcopy,
#cartreg {
	border-radius: 0;
	display: none;
	right: 70px;
	padding: 0 10px;
	font-size: 14px;
	height: 32px;
	line-height: 32px;
	bottom: 84px;
}

#cartreg {
	width: 80px;
	right: 140px;
}

#cartcopy img {
	top: 10px;
	margin-left: -10px;
}

#cartbox {
	width: 300px;
	height: 300px;
	background-color: #fff;
	border: #DCDCDC 1px solid;
	border-radius: 15px;
	position: fixed;
	z-index: 998;
	bottom: 70px;
	right: 10px;
	padding: 10px 10px 50px;
	display: none;
	font-size: 12px;
	box-shadow: 3px 3px 3px rgba(0, 0, 0, .1);
}

#cartbox .con {
	width: 100%;
	height: 100%;
	overflow-y: auto;
}

#cartbox .con h3 {
	font-size: 16px;
	border-bottom: #DCDCDC 1px solid;
}

#cartbox .con h4 {
	font-size: 14px;
}

#cartbox .con a:hover {
	color: red;
	text-decoration: line-through;
}

#cartbox .msgbox {
	background-color: rgba(0, 0, 0, 0.7);
	color: #fff;
	width: 180px;
	height: 20px;
	text-align: center;
	font-size: 14px;
	padding: 5px 10px;
	line-height: 20px;
	position: absolute;
	top: 50%;
	left: 50%;
	margin-top: -15px;
	margin-left: -100px;
}

.mark {
	background-color: red;
	color: #fff;
}

@media screen and (max-width:767px) {
	body {
		min-width: 320px;
		padding-top: 190px;
		padding-bottom: 50px
	}

	.topbar {
		position: fixed;
		top: 0;
		font-size: 12px;
		width: 100%;
		overflow: hidden;
		z-index:999999999999;
		
		
	}

	.topbar .mainycnh ul li {
		margin: 0 5px;
	}

	.topbar .mainycnh ul li:nth-child(2) {
		display: none;
	}

	.mainycnh {
		width: auto;
	}

	.top {
		width: auto;
		padding: 12px;
		height: auto;
		position: fixed;
		top: 1px;
		
		
		
		
		
	}



	.top .logo {
		display: none;
	}

	.top h1 {
		margin-top:-50px;
		font-size: 30px;
		line-height:30px;
		height:120px;
	}

	.top small {
		font-size: 12px;
		display: block;
		line-height: 16px;
		white-space: pre-wrap;
		width:350px;
		margin-right:30px;
	}

	.top .mqr {
		display: none;
	}

	.search,
	.news {
		width: 100%;
		padding: 10px 5%;
		border-radius: 0;
	}

	#schbox {
		position: fixed;
		top: 135px;
		width: 100%;
	}

	.search .le {
		display: flex;
		flex-wrap: wrap;
		justify-content: space-between;
		width: 100%;
		z-index:999999999999;
	}

	.search .input {
		font-size: 14px;
		width: 55%;
	}

	.searchButton {
		font-size: 14px;
		margin-right: 0;
		width: 60px;
		border: 0;
		background-color: #ad0505;
		color: #fff;
	}

	.msearch {
		display: block;
	}

	.ri {
		display: none;
	}

	.dl {
		display: none;
	}

	.fldh {
		width: 100%;
		padding: 0;
		display: none;
		flex-wrap: wrap;
		justify-content: space-between;
		position: fixed;
		top: 190px;
		border-bottom: #ccc 1px solid;
		padding-bottom: 10px;
		box-shadow: 5px 5px 5px rgb(0, 0, 0, 0.1);
	}

	.fldh .dw {
		width: 33%;
		padding: 0;
		text-align: center;
		font-size: 14px;
	}

	.fldh .dw span {
		display: none;
	}

	.sbfl2 {
		width: 100%;
	}

	.sbfl2 h2 {
		font-size: 14px;
		line-height: 22px;
		margin: 0;
		padding: 0;
	}

	.sbfl2 .left {
		width: auto;
		font-size: 14px;
		padding: 0;
		line-height: 18px;
		padding: 10px;
	}

	.sbfl2 .right {
		width: auto;
		padding: 0 10px;
		margin-left: 0;
		font-size: 12px;
		line-height: 16px;
	}

	.news dl {
		width: 100%;
		padding: 0;
		margin: 0;
		border: 0;
		font-size: 14px;
	}

	.news dl dd a {
		font-size: 14px;
		line-height: 16px;
	}

	.news dl dd.more a {
		font-size: 14px;
	}

	.foot {
		margin-top: 0;
		height: auto;
		font-size: 12px;
		line-height: 16px;
	}

	.yb_conct {
		display: none;
	}

	.sch {
		margin-top: 0;
		padding: 15px;
	}

	.sch thead {
		display: none;
	}

	.sch tr:nth-of-type(even) {
		background: #f5f5f5;
	}

	.sch td,
	.sch th {
		border: 0;
		line-height: 22px;
		padding: 0;
		font-size: 14px;
		display: inline;
	}

	.sch_result {
		padding: 10px;
		font-size: 14px;
	}

	.foot {
		display: none;
	}

	.footbar {
		display: flex;
	}

	.sbfl {
		width: auto;
	}

	.sbfl .left .sbflhf {
		display: none;
	}

	.sbfl .left h2 {
		font-size: 16px;
		width: auto;
	}

	.sbfl .right {
		width: 100%;
	}

	.sbfl .right .bt {
		width: auto;
		font-size: 14px;
		height: auto;
		line-height: 18px;
	}

	.sbfl.sbfl3 .left {
		display: flex;
		flex-wrap: wrap;
		justify-content: space-between;
		padding: 0;
		margin: 0;
		width: 100%;
		border-bottom: #fbdfdd 1px solid;
		background-color: #feefee;
	}

	.sbfl.sbfl3 .left h2 {
		width: 100%;
		text-align: center;
		padding: 15px 0;
		margin: 0;
		background-color: #fff;
	}

	.sbfl.sbfl3 .left .sbflhf {
		width: 33.33%;
		padding: 8px 0 0;
		text-align: center;
		display: block;

	}

	.sbfl.sbfl3 .left .sbflhf.active a {
		border-bottom: red 3px solid;
	}

	.sbfl.sbfl3 .right .bt {
		display: none;
	}

	.sbflnr {
		width: auto;
		font-size: 14px;
	}

	#feedbox {
		bottom: 140px;
		right: 5%;
		width: 90%;
		height: 370px;
	}
}

 /* 设置body高度为 3000px，页面就有滚动条显示啦 */
    body {
      height: 1000px;
    }
 
    /* 回到顶部 */
    .backTop {
      /* 固定定位 */
      position: fixed;
      bottom: 250px;
      right: 0;
      margin-right: 20px;
      z-index: 999;
      /* 回到顶部样式 */
      width: 35px;
      height: 35px;
      background-color: deepskyblue;
      /* 字体在元素中水平垂直居中 */
      line-height: 35px;
      text-align: center;
      font-size: 14px;
      color: white;
      /* 设置圆角 */
      border-radius: 50%;
      /* 设置过渡效果 */
      transition: all linear 0.5s;
      cursor: pointer;
      /* 隐藏 透明度为0 */
      opacity: 0;
    }