*{
  margin: 0;
  padding: 0;
  list-style: none;
}
.right{
  float: right;
}
.gray{
  background:#dddddd !important;
  padding-bottom: 70px !important;
  margin-bottom: 0px !important;
}
.head{
  position: relative;
  width: 100%;
  min-width: 1200px;
  height: 600px;
  background: url(../images/head.png) no-repeat center center;
  display: flex;
  display: -webkit-flex;
  align-items: center;
  -webkit-align-items: center;
  overflow: hidden;
}
.head_title{
  width: 100%;
  margin: auto 0;
  text-align: center;
  color: #ffffff;  
  transform: scale(1.3);
}
.head_title p:nth-child(2){
  line-height: 60px;
  font-size: 21px;
  letter-spacing: 8px;
}
.logo{
  position: absolute;
  left: 2%;
  top: 25px;
  width: 30%;
  display: flex;
  display: -webkit-flex;
  align-items: center;
  -webkit-align-items: center;
  font-size: 23px;
  color: #ffffff;
}
.logo img{
  width: 15%;
  margin-right: 20px;
}
.user,.vision,.product,.about{
  width: 100%;
  min-width: 1200px;
  background: #ffffff;
  padding-bottom: 70px;
}
.title{
  font-family: "微软雅黑";
  width: 100%;
  height: 150px;
  text-align: center;
  line-height: 150px; 
  font-size: 36px;
}
.user_ul{
  width: 1200px;
  margin: 0 auto;
  display: flex;
  display: -webkit-flex;
  align-items: center;
  -webkit-align-items: center;
  justify-content: space-around;
  -webkit-justify-content: space-around;
}
.user_li{
  width: 30%;
  text-align: center;
  font-size: 30px;
}
.user_li img{
  width: 40%;
  border-radius: 50%;
  margin-bottom: 10px;
}
.user_li div img{
  width: 80%;
}
.user_li p{
  width: 30%;
  height: 50px;
  line-height: 50px;
  margin: 0 auto;
  border-bottom: 1px solid #000000;
  
}
.user_li span{
  display: block;
  width: 100%;
  height: 50px;
  line-height: 50px;
}
#introduction,#about,#product,#user{
  position: relative;
  top: -150px;
  opacity: 0;
}
.introduction{
  display: block;
  width: 100%;
  text-align: center;
  font-size: 23px;
  color: #888888;
  position: relative;
  top: -30px;
}
.vision_img {
  width: 1200px;
  margin: 0 auto;

}
.vision_img img{
  width: 49%;
}
.product_ul{
  width: 1200px;
  margin: 0 auto;
  display: flex;
  display: -webkit-flex;
  align-items: center;
  flex-flow: wrap;
  -webkit-flex-flow: wrap;
  -webkit-align-items: center;
  justify-content: space-around;
  -webkit-justify-content: space-around;
  text-align: center;
}
.product_li{
  width: 20%;
  margin-top: 5px;
}
.product_li img{
  width: 100%;
}
.about_div{
  width: 1200px;
  background: #ffffff;
  margin: 0 auto;
}
.about_img,.about_p{
  width: 98%;
  margin: 0 auto;
  margin-top: 10px;
  margin-left: 1%;
}
.about_p{
  text-align: left;
}
.address{
  width: 100%;
  background: #dddddd;
  margin-top: 30px;
}
.contact li{
  margin-top: 5px;
  font-size: 15px;
}
.promotion{
  margin-top: 10px;
}
.foot{
  clear: both;
  width: 100%;
  min-width: 1200px;
  border-top: 1px solid #eaeaea;
}
.foot p{
  width: 100%;
  height: 80px;
  line-height: 80px;
  text-align: center;
  font-size: 16px;
}
.filing{
  margin-left: 15px;
  text-decoration: none;
}