section{
  font-size: .28rem
}
.index_2{
  background-color: #273142;
  color: #FFFFFF
}
.index2_content .item_text{
  height:3rem;
}
.index_3{
  background-color: #F6F9FC;
  padding:30px 0 ;

}
.index_3 .item{
  padding:.4rem 30px;

}
.index_3 .bg_w{
  background-color: #FFFFFF;
}
.index_5 .contact_box{
  background-image:url("../images/contact_bg.png");
  background-size: 100%;
  color: #FFFFFF;
}
.contact_btn{
  background: #DDE2EF;
  color: #566DAF;
  width: 3rem;
  height: .6rem;
  line-height: .6rem;
  text-align: center;
  border-radius: .4rem;
  margin: 0 auto;
  margin-top: .4rem;
}