.pro-banner{
  width: 100%;
  height: 405px;
  /*background: url("../images/problembg.png") no-repeat center center;*/
  background-size: cover;
  padding-top: 50px;
}
.ban-t li{
  margin-bottom: 40px;
}
.pro-banner .banner-link {
  text-align: center;
  color: #fff;
  display: inline-block;
  padding-left: 25px;
  position: relative;
}
.pro-banner .banner-link h1{
  font-size: 37px;
  /*font-weight: bold;*/
}
.pro-banner .banner-link p{
  font-size: 12px;
  font-weight: lighter;
}
.pro-banner .banner-link span{
  width:0;
  height:0;
  border-width:10px 0 10px 10px;
  border-style:solid;
  border-color:transparent transparent transparent #fff;/*透明 透明 透明 灰*/
  position: absolute;
  display: block;
  left: 0;
  top: 16px;
}
.pro-wapperb{
  padding-top: 60px;
  position: relative;
}
.problem-wapper .pro-wapperb .wapper-h1{
  font-size: 36px;
  color: #6f74f2;
  line-height: 60px;
  text-align: center;
}
.problem-wapper .pro-wapperb .wapper-ul .border-line{
  padding: 40px 0;
  border-bottom: 1px dashed #a9a9ae;
  /*display: none;*/
}
.problem-wapper .pro-wapperb .wapper-ul li h1{
  font-size: 20px;
  color: #313138;
  margin-bottom: 10px;
}
.problem-wapper .pro-wapperb .wapper-ul li p{
  font-size: 16px;
  color: #313138;
}
.wapper-btn{
  width: 100px;
  display: inline-block;
  position: absolute;
  top: 15px;
  left: 50%;
  margin-left: -50px;
  text-align: center;
  color: #6f74f2;
  font-size: 20px;
}
.btn-bg{
  width: 100%;
  height: 110px;
  background: -webkit-linear-gradient(transparent , #f5f5f5); /* Safari 5.1 - 6.0 */
  background: -o-linear-gradient(transparent , #f5f5f5); /* Opera 11.1 - 12.0 */
  background: -moz-linear-gradient(transparent , #f5f5f5); /* Firefox 3.6 - 15 */
  background: linear-gradient(transparent , #f5f5f5); /* 标准的语法（必须放在最后） */
  position: relative;
  
}
/*.problem-wapper .pro-wapperb .wapper-ul li:nth-child(1){*/
  /*display: block;*/
/*}*/
/*.problem-wapper .pro-wapperb .wapper-ul li:nth-child(2){*/
  /*display: block;*/
/*}*/
/*.problem-wapper .pro-wapperb .wapper-ul li:nth-child(3){*/
  /*display: block;*/
/*}*/