.header{
  width: 100%;
  background: #ffffff;
  padding-left: 140px;
  padding-right: 150px;
  box-sizing: border-box;
}
.header-nav{
  width: 1200px;
  height: 80px;
  margin: 0 auto;
}
.logo{
  float: left;
  margin-right: 83px;
  margin-top: 19px;
  width: 422px;
}
.nav-content{
  float: right;
}
.nav-content li {
  float: left;
  line-height: 80px;
  margin-right: 44px;
}
.nav-content li a{
  display: inline-block;
  font-size: 14px;
  color: #333333;
  height: 53px;
}
.nav-content li a:hover{
  border-bottom: 3px solid #0b6ec2;
}   
.active{
  border-bottom: 3px solid #0b6ec2;
}   

/* .banner{margin-bottom: 30px;} */

.banner,
.banner img
{
  background-size:cover ;
  width: 100%;
}


.problem{
width: 100%;
background: url(../images/4.png)no-repeat center bottom;
background-size: 100%;
/* padding-top: 30px; */
padding-bottom: 75px;
box-sizing: border-box;
margin-top: 50px;
}


.problem-content{
  width: 1100px;
  margin: 0 auto;
  padding-left: 30px;
  padding-right: 30px;
  box-sizing: border-box;
  
}
.problem-top{
  /* padding: 0 32px 0 32px;
  box-sizing: border-box; */
  width: 100%;
  height: 569px;
  background: url(../images/15.png) no-repeat;
  position: relative;
  padding-left: 25px;
  padding-right: 25px;
  padding-top: 20px;
  box-sizing: border-box;
  /* background-size: 100% 100%; */
}
.problem-img-top{
width: 317px;
height: 47px;
background: url(../images/8.png) no-repeat;
text-align: center;
font-size: 26px;
line-height: 47px;
color: #ffffff;
position: absolute;
top: -24px;
left: 363px;

}

.problem-one-img{
width: 984px;
height: 50px;
background: url(../images/17.png) no-repeat;  
padding-left: 20px;
box-sizing: border-box;
font-size: 16px;
color: #0b72cf;
line-height: 50px;
}
.one-content{
font-size: 16px;
color: #333;
line-height: 30px;
padding-left: 20px;
padding-right: 15px;
box-sizing: border-box;
margin-top: 30px;
margin-bottom: 28px;
}
.problem-bottom{
margin-top: 70px;
width: 100%;
height: 400px;
background: url(../images/20.png) no-repeat;
position: relative;
padding-left: 50px;
padding-right: 50px;
padding-top:80px;
box-sizing: border-box;
}

.problem-bottom-left{
float: left;
}
.problem-bottom-left h4{
font-size: 16px;
color: #0b72cf;
line-height: 30px;
}
.problem-bottom-left p{
font-size: 16px;
color: #333;
line-height: 30px;
}
.problem-bottom-right{
float: right;
}
.tn{
padding-left: 48px;
box-sizing: border-box;
}
.footer{
  width: 100%;
  height: 53px;
  font-size: 12px;
  color: #ffffff;
  line-height: 53px;
  background: #0a062b;
  text-align: center;
}

.qa_title{ background:url(../images/qa_02.jpg) no-repeat center; height:87px;}
.qa_txt{ background:url(../images/qa_03.jpg) repeat-y center;}
.qa_bottom{ background:url(../images/qa_04.jpg) no-repeat center bottom; height:50px;}
.text{ width:1000px; margin:0 auto;}
h6{ background:url(../images/qa-1.png) no-repeat center; line-height:50px; font-family:"微软雅黑"; font-size:16px; font-weight:bold; color:#0b72cf; padding-left:30px;}
p{ line-height:32px; font-size:14px; color:#333; padding:10px 30px;}
.contact{ background:url(../images/9.png) no-repeat center; height:399px; margin:20px 0 50px;}.header{
  width: 100%;
  background: #ffffff;
  padding-left: 140px;
  padding-right: 150px;
  box-sizing: border-box;
}
.header-nav{
  width: 1200px;
  height: 80px;
  margin: 0 auto;
}
.logo{
  float: left;
  margin-right: 83px;
  margin-top: 19px;
  width: 422px;
}
.nav-content{
  float: right;
}
.nav-content li {
  float: left;
  line-height: 80px;
  margin-right: 44px;
}
.nav-content li a{
  display: inline-block;
  font-size: 14px;
  color: #333333;
  height: 53px;
}
.nav-content li a:hover{
  border-bottom: 3px solid #0b6ec2;
}   
.active{
  border-bottom: 3px solid #0b6ec2;
}   

/* .banner{margin-bottom: 30px;} */

.banner,
.banner img
{
  background-size:cover ;
  width: 100%;
}


.problem{
width: 100%;
background: url(../images/4.png)no-repeat center bottom;
background-size: 100%;
/* padding-top: 30px; */
padding-bottom: 75px;
box-sizing: border-box;
margin-top: 50px;
}


.problem-content{
  width: 1100px;
  margin: 0 auto;
  padding-left: 30px;
  padding-right: 30px;
  box-sizing: border-box;
  
}
.problem-top{
  /* padding: 0 32px 0 32px;
  box-sizing: border-box; */
  width: 100%;
  height: 569px;
  background: url(../images/15.png) no-repeat;
  position: relative;
  padding-left: 25px;
  padding-right: 25px;
  padding-top: 20px;
  box-sizing: border-box;
  /* background-size: 100% 100%; */
}
.problem-img-top{
width: 317px;
height: 47px;
background: url(../images/8.png) no-repeat;
text-align: center;
font-size: 26px;
line-height: 47px;
color: #ffffff;
position: absolute;
top: -24px;
left: 363px;

}

.problem-one-img{
width: 984px;
height: 50px;
background: url(../images/17.png) no-repeat;  
padding-left: 20px;
box-sizing: border-box;
font-size: 16px;
color: #0b72cf;
line-height: 50px;
}
.one-content{
font-size: 16px;
color: #333;
line-height: 30px;
padding-left: 20px;
padding-right: 15px;
box-sizing: border-box;
margin-top: 30px;
margin-bottom: 28px;
}
.problem-bottom{
margin-top: 70px;
width: 100%;
height: 400px;
background: url(../images/20.png) no-repeat;
position: relative;
padding-left: 50px;
padding-right: 50px;
padding-top:80px;
box-sizing: border-box;
}

.problem-bottom-left{
float: left;
}
.problem-bottom-left h4{
font-size: 16px;
color: #0b72cf;
line-height: 30px;
}
.problem-bottom-left p{
font-size: 16px;
color: #333;
line-height: 30px;
}
.problem-bottom-right{
float: right;
}
.tn{
padding-left: 48px;
box-sizing: border-box;
}
.footer{
  width: 100%;
  height: 53px;
  font-size: 12px;
  color: #ffffff;
  line-height: 53px;
  background: #0a062b;
  text-align: center;
}

.qa_title{ background:url(../images/qa_02.jpg) no-repeat center; height:87px;}
.qa_txt{ background:url(../images/qa_03.jpg) repeat-y center;}
.qa_bottom{ background:url(../images/qa_04.jpg) no-repeat center bottom; height:50px;}
.text{ width:1000px; margin:0 auto;}
h6{ background:url(../images/qa-1.png) no-repeat center; line-height:50px; font-family:"微软雅黑"; font-size:16px; font-weight:bold; color:#0b72cf; padding-left:30px;}
p{ line-height:32px; font-size:14px; color:#333; padding:10px 30px;}
.contact{ background:url(../images/9.png) no-repeat center; height:399px; margin:20px 0 50px;}