.index-nav  li:first-child {
    width: 339px;

    height: 227px;
   display: inline-block;
    background: url("../image/zlwxz.png") no-repeat center center;
    background-size: contain;
}
.index-nav  li:nth-child(2) {
    width: 339px;

    height: 227px;
    display: inline-block;
    background: url("../image/rywxz.png") no-repeat center center;
    background-size: contain;
    margin-left: 16px;
}
.navone  {
    height: 241px !important;
    background: url("../image/zl.png") no-repeat center center !important;
    background-size: contain !important;

}

.navtwo {
    height: 241px !important;
    background: url("../image/ry.png") no-repeat center center !important;
    background-size: contain !important;
}

.index-nav  li p:first-child {
    font-size: 22px;
    font-weight: normal;
    font-stretch: normal;
    line-height: 19px;
    letter-spacing: 0px;
    color: #333333;
    text-align: center;
    padding-top: 153px;
}
.index-nav  li p:nth-child(2) {
    font-size: 12px;
    font-weight: normal;
    font-stretch: normal;
    line-height: 19px;
    letter-spacing: 0px;
    color: #999999;
    text-align: center;
    padding-top: 14px;

}
.index-nav ul {
    margin-top: 53px;
    margin-bottom: 54px;
}
.nav-content .r-list li {
    width: 260px;
    height: 185px;
    background-color: #f2f2f2;
    box-shadow: 0px 0px 16px 0px
    rgba(0, 0, 0, 0.2);
    border: solid 1px #cecece;
    display: inline-block;
    margin-right: 45px;
    margin-bottom: 49px;
}
.nav-content .z-list li {
    width: 211px;
    height: 292px;
    background-color: #dfdfdf;
    box-shadow: 0px 0px 16px 0px
    rgba(0, 0, 0, 0.2);
    display: inline-block;
    margin-right: 30px;
    margin-bottom: 28px;
}
/*.nav-content .z-list li img {
    margin: 6px auto;
}*/
.nav-content ul li img {
    width:auto;
height:auto;
max-width:100%;
max-height:100%;
}
.nav-content .r-list li:nth-child(4n) {
    margin-right: 0px;
}
.nav-content .z-list li:nth-child(5n) {
    margin-right: 0px;
}
.dis {
    display: none;
}
/*pop*/
.pop_up {position: fixed;top: 0;left: 0; display: none;background: rgba(50, 50, 50, .7);z-index: 20000;}
.pop_up_main {    height: 700px;
    width: 500px;    position: absolute; left: 50%;  top: 50%; transform:translate(-50%,-50%) ; -webkit-transform:translate(-50%,-50%) ; -moz-transform:translate(-50%,-50%) ; -ms-transform:translate(-50%,-50%) ; -o-transform:translate(-50%,-50%) ; }
.pop_up_main>img {
    width: auto;
    height: auto;
    max-width: 100%;
    max-height: 100%;
}