header>div>h1 {
  font-size: 40px;
  font-family: Microsoft YaHei;
  font-weight: bold;
  line-height: 52px;
  color: #FFFFFF;
  opacity: 1;
  position: absolute;
  left: 72px;

  top: 184px;
}


header>div>span {
  display: block;
  width: 448px;
  height: 51px;
  font-size: 16px;
  font-family: Microsoft YaHei;
  font-weight: 400;
  line-height: 30px;
  color: #FFFFFF;
  opacity: 1;
  position: absolute;
  top: 252px;
  left: 72px;
}

  .h420 {
    height: 420px;
  }

  .main1>ul>li>div>img {
    margin: 52px 220px 35px 70px;
  }

  .main1_div {
    position: relative;
  }

  .main1 ol {
    position: absolute;
    top: 70px;
    left: 624px;
  }

  .main1 ol li:nth-child(1) {

    margin-bottom: 48px;
  }

  .main1 ol li:nth-child(3) {
    margin-top: 53px;
    margin-bottom: 56px;
  }

  .main1 ol li:nth-child(5) {
    margin-top: 58px;

  }

  .main1>ul>li>div>ol>li {
    width: 13px;
    height: 13px;
    display: block;
  }

  .main_p {
    font-size: 24px;
    font-family: Microsoft YaHei;
    font-weight: 400;
    line-height: 31px;
    color: #666666;
    opacity: 1;
  }

  .main1 p {
    margin-top: 161px;
    margin-bottom: 20px;
  }

  .main1 span {
    display: block;
    width: 464px;
    height: 51px;
    font-size: 16px;
    font-family: Microsoft YaHei;
    font-weight: 400;
    line-height: 30px;
    color: #999999;
    opacity: 1;
  }

  .bg {

    background: #FAFAFA;
  }

  .main2 p {
    margin: 150px 183px 20px 72px;
    
  }

  .main2 span {
    display: block;
    width: 464px;
    height: 81px;
    font-size: 16px;
    font-family: Microsoft YaHei;
    font-weight: 400;
    line-height: 30px;
    color: #999999;
    opacity: 1;
    margin-left: 72px;
  }

  .main3 img {
    margin: 20px 173px 27px 54px;
  }

  .main3 p {
    margin: 163px auto 20px auto;
  }

  .main3 span {
    display: block;
    width: 480px;
    height: 51px;
    font-size: 16px;
    font-family: Microsoft YaHei;
    font-weight: 400;
    line-height: 30px;
    color: #999999;
    opacity: 1;
  }

  .main4 p {
    margin: 166px 355px 20px 72px;
  }

  .main4 span {
    margin-left: 72px;
    display: block;
    width: 448px;
    height: 51px;
    font-size: 16px;
    font-family: Microsoft YaHei;
    font-weight: 400;
    line-height: 30px;
    color: #999999;
    opacity: 1;
  }

  .main5 img {
    margin: 42px 176px 33px 63px;
  }

  .main5 p {
    margin: 163px auto 20px auto;
  }

  .main5 span {

    display: block;
    width: 384px;
    height: 21px;
    font-size: 16px;
    font-family: Microsoft YaHei;
    font-weight: 400;
    line-height: 30px;
    color: #999999;
    opacity: 1;
  }
  
  * {
    padding: 0;
    margin: 0;
  }
  a {
    text-decoration: none;
  }
  
  li {
    list-style: none;
  }
  .flex {
    display: flex;
  }
   
  .mr50 {
    margin-right: 50px;
  }
  .mt6 {
    margin-top: 6px;
  }
  .mt12 {
    margin-top: 12px;
    display: flex;
    align-items: baseline;
  }
  .mt50 {
    margin-top: 50px;
  }
  
  .ml60 {
    margin-left: 60px;
  }
  .ml80 {
    margin-left: 80px;
  }
  .mtb10 {
    margin: 10px auto;
  }
  .mtb30 {
    margin: 30px auto;
  }
  
  .foot {
    height: 220px;
    background: #232628;
    opacity: 1;
  }
  .public {
    display: flex;
    padding-top: 50px;
}

.public>li:nth-child(1) {
    margin-right: 30px;
}

.public_img {
    width: 104px;
    height: 104px;
    background: #ffffff;
    border: 1px solid #707070;
    opacity: 1;
}

.public_text {
    width: 84px;
    height: 19px;
    font-size: 14px;
    font-family: Microsoft YaHei;
    font-weight: 400;
    line-height: 19px;
    color: #ffffff;
    opacity: 1;
    padding-left: 10px;
}
  .xian {
    width: 527px;
    height: 0px;
    border: 1px solid #ffffff;
    opacity: 1;
  }
  .text {
    width: 28px;
    height: 19px;
    font-size: 14px;
    font-family: Microsoft YaHei;
    font-weight: 400;
    line-height: 19px;
    color: #ffffff;
    opacity: 1;
  }
  .bangquan {
    height: 19px;
    font-size: 14px;
    font-family: Microsoft YaHei;
    font-weight: 400;
    line-height: 19px;
    color: #ffffff;
    opacity: 1;
  }
  .call_me {
    height: 19px;
    font-size: 14px;
    font-family: Microsoft YaHei;
    font-weight: bold;
    line-height: 19px;
    color: #ffffff;
    opacity: 1;
  }
  .call_me_all {
  	display: inline-block;
  	font-size: 13px;
  	font-family: Microsoft YaHei;
  	font-weight: 400;
  	line-height: 26px;
  	color: #ffffff;
  	opacity: 1;
  	width: 249px;
  	word-wrap:break-word;
  }
  .address{
    font-size: 13px;
  	vertical-align: top;
  	color: #ffffff;
  	font-family: Microsoft YaHei;
  	font-weight: 400;
  }
  #app {
    width: 1920px;
  }
  

  
  .flex {
    display: flex;
  }
  
  

  header {
    position: relative;
    background: #ffffff;
    opacity: 1;
	background: url(https://hongteng-image.oss-cn-shanghai.aliyuncs.com/official-website/img/maoyiimg/111.png) no-repeat center center;
	height: 480px;
  }
  

  .top {
    width: 1920px;
    height: 68px;
    background: #333333;
    position: absolute;
    top: 0;

  }
  
  header a img {
    position: absolute;
    
  }
  
header .title {
  margin-left: 531px;
  display: flex;
  z-index: 2;
}
header .title>li {
  padding: 24px 25px;
  z-index: 2;
  width: 64px;
}
header .title>li:nth-child(1){
  width: 32px;
}
header .title li a {
  display: block;
  width: 100%;
  height: 100%;
  text-align: center;
  color: #ffffff;
  font-size: 16px;
  z-index: 2;

}
  
 .product_case:hover .opt {
 	transition-property: all;
 	transition-duration: 0.5s;
 	margin-top: 0px;
 	height: 120px;
 }
 
 .product_case:hover .opt_i {
 	opacity: 0.7;
 }
 
 .product_case_none {
 	position: absolute;
 	height: 0;
 	left: 0;
 	top: -26px;
 	transition-duration: 0.5s;
 }
 
 .opt {
 	position: absolute;
 	width: 1920px;
 	height: 0;
 	background-color: rgba(00, 00, 00, 0.7);
 	top: 88px;
 	overflow: hidden;
 	transition-property: all;
 	transition-duration: 0.5s;
 
 }
 
  
  .product_case_none .opt_i {
  	position: absolute;
  	opacity: 0;
  	border-top: 9.5px solid transparent;
  	border-right: 5.5px solid transparent;
  	border-bottom: 9.5px solid #000;
  	border-left: 5.5px solid transparent;
  	left: 1001px;
  	top: 69px;
  }
  
  .opt_ul p {
    width: 128px;
    height: 21px;
    font-size: 16px;
    font-family: Microsoft YaHei;
    font-weight: 400;
    line-height: 21px;
    color: #FFFFFF;
    opacity: 1;
  }
  
  .opt_ul p:nth-child(1) {
    margin-top: 28px;
    margin-bottom: 10px;
  }
  
  .opt_ul {
    width: 228px;
    height: 32px;
    font-size: 12px;
    font-family: Microsoft YaHei;
    font-weight: 400;
    line-height: 16px;
    color: #FFFFFF;
    opacity: 1;
    margin-left: 395px
  }
  
  .opt_ul span {
    display: block;
    width: 228px;
    height: 32px;
    font-size: 12px;
    font-family: Microsoft YaHei;
    font-weight: 400;
    line-height: 16px;
    color: #FFFFFF;
    opacity: 1;
  }
  
  .opt_ul span:nth-child(1) {
    margin-right: 40px;
  }
  
  .opt_ul span:nth-child(2) {
    margin-right: 29px;
	display: -webkit-box;
	-webkit-box-orient: vertical;
	-webkit-line-clamp: 2;
	overflow: hidden;
	text-align: left;
  }
  
  .opt_ul span:nth-child(3) {
    margin-right: 29px;
  }
  
  .opt_xian {
    width: 0px;
    height: 80px;
    border: 1px solid #CCCCCC;
    opacity: 1;
    margin-top: 20px;
    margin-right: 40px;
    background-color: #ccc;
  }
  
  header label {
    position: absolute;
    top: 24px;
    left: 1368px;
    color: #ffffff;
    font-size: 16px;
    
  }
  
  header img {
    position: absolute;
  }
  
  
 .main2parn{
  width: 100%;
  margin: auto;
  background-color: #FAFAFA ;
}
.main4parn{
  width: 100%;
  margin: auto;
  background-color: #FAFAFA ;
}
.main1{
  margin: auto;
  width: 1190px;
}
.main2{
  margin: auto;
  width: 1190px;
}
.main3{
    margin: auto;
    width: 1190px;
}
.main4{
    margin: auto;
    width: 1190px;
}
.main5{
    margin: auto;
    width: 1190px;
}