body{background-color: #fff}
/*====================导航*********/
/* header */
.header{
    height: 256px;
    width: 100%;
    background:url(../images/navv.png) no-repeat center;
    position: absolute;
    z-index: 1111;
    top: 0;
}
.logo{
    box-sizing: border-box;
    position: absolute;
    left: 0;
    top: 0;
    width: 810px;
    height: 170px;

    padding-top: 25px;
    padding-left: 78px;
}
.h_con{
    height: 105px;
    margin-left: 37%;
}
.nav .yiji{
    float: left;
    width: 110px;
    line-height: 105px;
    text-align: center;
}
.nav .yiji>a{
    color: #fff;
    display: block;
    width: 100%;
    height: 100%;
    position: relative;
    font-size: 16px;
}
.nav .yiji>a:hover{
    content: '';
    display: block;
	color:000;
	background:url(../images/nav_di2.jpg) no-repeat center;

}
.nav .yiji.active>a::after{
    display: block;
}
.nav .yiji.dropdown{
    display: inherit;
    position: relative;
}

.nav .yiji .dropdown_menu{
    display: none;
    position: absolute;
    top:105px;
    background: rgba(0, 0,0, 0.6);
    box-shadow: 0 15px 27px 0 rgba(167,165,165,0.38);
    width:640px;
    left: 50%;
    margin-left: -345px;
    height: 390px;
}
.nav .yiji .dropdown_menu ul li{
    font-size: .8rem;
    color: #666;
    line-height: 40px;
    text-align: center;
    margin-bottom: 2px;
    float: left;
    margin-top: 10px;
    width: 200px;
    margin-left: 10px;
}
.nav .yiji .dropdown_menu ul li>a{
   display:block;
   width: 200px;
   height: 129px;
  overflow:hidden;
}
.nav .yiji .dropdown_menu ul li img {
    width: 200px;
    height: 129px;
}
.nav .yiji .dropdown_menu ul li h2 {
    width: 100%;
    font-size: 14px;
    color: #5e5e5e;
    border-bottom: 1px solid #dbdbdb;
    line-height: 35px;
      background: #f6f6f6;
}
.nav .yiji .dropdown_menu ul li:hover h2 a {
    background:#ddd;
    color:#c00;
    display: block;
}
.nav .yiji .dropdown_menu ul li p .a3{
color:#fff;
}
.nav .yiji .dropdown_menu ul li p .a3:hover{
      text-decoration: underline;
}
.nav .yiji:hover .dropdown_menu{
    display: block;

    -webkit-transition: 0.5s;
    -moz-transition: 0.5s;
    -o-transition: 0.5s;
    transition: 0.5s;
}
.nav .yiji:hover .dropdown_menu a{
    color: #666;
}


.h_phone{

    font-size: 35px;
    color: #fff;
    background: url(../images/tel.png) left center no-repeat;
    padding-left: 70px;
    margin-right: 5%;
}
@media screen and (max-width: 1900px){
.h_con {margin-left: 30%;}
}

@media screen and (max-width: 1700px){
.logo {
    background: none;
    padding-top: 0;
    top: 5px;
    padding-left: 10px;
}
.logo img{width: 43%;margin-top: 5px;}
.nav li{width: 105px;}
.h_phone{margin-right: 1%}
}
@media screen and (max-width: 1550px){
.h_con {margin-left: 27%;}
.nav li {width: 86px;}
.h_phone{font-size: 26px; background-size: 16%;padding-left: 50px;}
}

.zhiding{
    width: 70px;
    height: 70px;
    overflow: hidden;
    position: absolute;
    z-index: 9999;
    right: 2%;
    bottom: 15%
}