body {
    margin: 0;
    padding: 0;
    background-image: url(./img/back.jpg);
    background-repeat: no-repeat;
    /* background-size: ; */
}

h1,
h2,
h3,
h4,
h5 {
    padding: 0;
    margin: 0;
    display: inline-block;
}

ul,
li,
ol,
p {
    padding: 0;
    margin: 0;
    list-style: none;
}

.left_heade,
.right_heade {
    display: inline-block;
}

.right_heade {
    /* float: right; */
}

.left_heade span,
.right_heade span {
    margin-right: 3px;
}

.header_ {
    width: 100%;
    background: rgba(253, 253, 253, 0.8);
    font-size: 13px;
    display: block;
    z-index: 99;
    /* border-bottom: 1px solid #ececec; */
}

.head_ {
    /* background-image: url(./img/back.jpg);
    background-repeat: no-repeat;
    background-position: center; */

}

.right_heade img,
.right_heade span {
    vertical-align: middle;
}

.nav_header {
    width: 1200px;
    margin: 0 auto;
    padding: 5px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo_seach {
    width: 1200px;
    height: 284px;
    margin:0 auto;
    position: relative;
    background-image: url(./img/bak.jpg);
    background-repeat: no-repeat;
}

.logo_img {
    position: absolute;
    top:83px;
    left:41px;
    display: inline-block;
}

.logo_img img {
    width: 376px;
    height: 79px;
}
.nav_ {
    /* width: 100%; */
    background: #1055a3;

}

.nav_tit {
    margin: 0 auto;
    width: 1200px;
    height: 61px;
    display: flex;
    justify-content: space-between;
    align-items: center;

}

.first_page {
    background: #e11d11;
    margin-right: 43px;
    position: relative;
    top: -10px;
    left: 0;
    /* padding:; */
}

.first_page img {
    width: 35px;
    height: 35px;
    /* vertical-align: middle; */
}

.first_page h3 {
    font-size: 20px;
    color: #ffec7d;
    margin-left: 15px;
    vertical-align: top;
    margin-top: 5px;
}
.kailong {
    position: absolute;
    right: -10px;
    top: 0;
    /* width: 0;
    height: 0; */
    /* background:rgba(39,109,199,0.5); */
    border-left: 5px solid #e11d11;
    border-bottom: 5px solid #e11d11;
    border-top: 5px solid transparent;
    border-right: 5px solid transparent;
}

.nav_ li {
    width: 100px;
    text-align: center;
    display: inline-block;
    padding: 0 10px;
    font-size: 18px;
    font-weight: bold;
    color: #fff;
    margin-top: 10px;
}
.nav_tit li{
    /* border-right:1px solid #42a3fe; */
}
.nav_ li::after:first-child {
    display: none;
}

.nav_tit li:first-child {
    color: #f10000;

}

.nav_ li:hover {
    color: #f10000;
}
.public{
    display: inline-flex;
    justify-content: space-between;
    align-items: center;
}
.cont{
    width: 1128px;
    padding:0 36px;
    margin:0 auto;
    background: #fff;
}
.headline{
    width: 1128px;

}
.hot_tit{
    width:1128px;
    text-align: center;
    font-weight: bold;
    font-size:30px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color:#05559e;
    padding:40px 0 25px 0;
    border-bottom:1px solid #f0f0f0;
}
.hot_class ul{
    width: 1128px;
    padding:20px 0;
}
.hot_class li{
    width: 555px;
    height: 44px;
    text-align: center;
    overflow: hidden;
    word-break: break-all;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    line-height: 22px;
    font-size: 17px;
    color:#05559e;
    border-right:1px solid #f0f0f0;
}
/* .建筑要闻 */
.import_news{
    width: 1128px;

}
.news_ad{
    width: 600px;
    display: inline-block;
}
.news_ad img{
    width: 600px;
    height: 400px;
}
.import_cont{
    width: 500px;
    font-size:0;
    display: inline-block;
}
.imp_class{
    border-bottom:1px solid #0052af;
}
.imp_class li{
    font-size:17px;
    padding:8px 15px;
    display: inline-block;
    cursor: pointer;
}
.imp_class li:hover{
    color:#fff;
    background: #0052af;
}
.import_list{
    height: 342px;
    margin-top:10px;
}
.import_list li{
    width: 480px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size:15px;
    line-height: 38px;
    height: 38px;
}
.import_list li::before{
    content:'▪';
    margin-right:8px;
    color:#445e92;
}
/* 广告位 */
.ad_{
    width: 1128px;
    margin-top:20px;
    /* flex-wrap: wrap; */
}
/* 工程项目 */
.project{
    width: 1128px;
    margin-top:20px;
}
.pro_left{
    width: 600px;
    display: inline-block;
}
.pro_list ul{
    height: 228px;
}
.pro_list li{
    width:540px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 15px;
    line-height: 38px;
    height: 38px;
}
.pro_list li::before {
    content: '▪';
    margin-right: 8px;
    color: #445e92;
}
/* 会员服务 */
.pro_mem {
    width: 500px;
    display: inline-block;
}
.mem_{
    width: 500px;
    flex-wrap: wrap;
}
.mem_ img{
    margin-top:12px;
}
/* 推荐公司 */
.company{
    width: 1128px;
    margin-top:20px;
}
.comp_left{
    width: 880px;
    display: inline-block;
}
.comp_top{
    padding:5px 0;
    border-bottom:2px solid #0658bc;
}
.comp_top span{
    font-size:24px;
    color:#2c68c1;
}
.more_{
    display: inline-block;
    font-size: 13px;
    float: right;
    display: inline-block;
    margin-top:10px;
}
.comp_cont ul{
    width: 880px;
    font-size:0;
    margin-top:15px;
}
.comp_cont li{
    width:160px;
    display: inline-block;
}
.comp_cont img{
    width: 160px;
    height: 160px;
}
.comp_name{
    width: 160px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size:15px;
    padding:5px 0;
}

/* 最新入驻 */
.comp_news{
    width: 220px;
    border:1px solid #e6e6e6;
}
.zxrz{
    font-size:14px;
    padding:11px 5px;
    border-bottom:1px solid #e6e6e6;
}
.zxrz_list{
    width: 220px;
    padding:10px;
}
.zxrz_list li{
    width:200px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size:15px;
    height: 32px;
    line-height: 32px;
}
/* 广告位 */
.ad- {
    width: 1128px;
    margin-top:10px;
    flex-wrap: wrap;
}
.ad- img{
    margin-top:10px;
}
/* 供应信息 */
.sell{
    width: 1128px;
    margin-top:20px;
}
.sell_left{
    width:825px;
    font-size:0;
    display: inline-block;
}
.sell_top{
    border-bottom:1px solid #0052af;
}
.gyxx{
    color:#fff;
    font-size:18px;
    background: #0052af;
    padding:8px 18px;
    display: inline-block;
}
.sell_class{
    display: inline-block;
    float: right;
    margin-top:5px;
}
.sell_class li{
    padding:0 10px;
    color:#565656;
    display: inline-block;
    font-size:13px;
    border-right:1px solid #565656;
}
.sell_cont ul{
    width: 825px;
    height: 413px;
    flex-wrap: wrap;
    /* margin-top:15px; */
}   
.sell_cont li{
    width: 170px;
    display: inline-block;
    margin-top: 15px;
}
.sell_cont img{
    width: 170px;
    height: 145px;
}
.sell_name{
    width: 170px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size:14px;
    padding:5px 0;
}
.ljxq{
    display: inline-block;
    background: #df0000;
    color:#fff;
    padding:1px 10px;
    font-size:12px;
    float: right;
}
/* 最新求购 */
.buy{
    width: 270px;
    display: inline-block;
}
.buy_list{
    width:270px;
}
.buy_img{
    width: 20px;
    display: inline-block;
}
.buy_list ul{
    /*height: 410px;*/
    display: inline-block;
}
.buy_list li{
    width: 230px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size:15px;
    height:41px;
    line-height:57px;
    margin-left:5px;
}
/* 工程找劳务 */
.work_job{
    width: 1128px;
    margin-top:20px;
}
.work{
    width:350px;
    display: inline-block;
    font-size:0;
}
.work_hot{
    width: 350px;
    margin-top:15px;
}
.work_img{
    width: 162px;
    display: inline-block;
}
.work_img img{
    width: 162px;
    height: 108px;
}
.work_des{
    width: 170px;
    display: inline-block;
}
.work_name{
    width: 170px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-weight: bold;
    font-size:16px;
}
.work_intro{
    width: 170px;
    overflow: hidden;
    word-break: break-all;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    line-height: 22px;
    font-size: 14px;
    color: #666666;
    margin-top:10px;
}
.work_list{
    width: 340px;
    height: 102px;
    margin-top:10px;
}

.work_list li{
    width: 340px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size:15px;
    height:34px;
    line-height: 34px;
}
.work_list li::before{
    content:'▪';
    color:#445e92;
    margin-right:8px;
}
/* 行业资讯 */
.news{
    width: 1128px;
    margin-top:20px;
}
.m_{
    display: inline-block;
    float: right;
    font-size: 13px;
    color:#565656;
    margin-top:10px;
    margin-right:10px;
}
.news_cont {
    width: 1128px;

}

/* 展会 */
.exhib {
    width: 350px;
}

.exhib_top {
    font-size: 0;

    margin-top: 10px;
}

.exhib_top h4 {
    padding: 4px 15px;
    display: inline-block;
    font-size: 15px;
    cursor: pointer;
    border-right:1px solid #edeaea;
}
.exhib_top h4:last-child{
    border-right:0;
}
.exhib_top h4:hover{
    color:#df0000;
}
.exhib_list {
    height: 395px;
    /* padding:10px 0; */
}

.exhib_list li {
    padding: 10px 10px;
    border-bottom: 1px dashed #d9d9d9;
}

.exhib_name {
    width: 340px;
    font-weight: bold;
    font-size: 15px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    /* padding:5px 0; */
}

.exhib_des {
    width: 335px;
    margin-top: 10px;
}

.exhib_img {
    width: 140px;
    display: inline-block;
}

.exhib_img img {
    width: 130px;
    height: 78px;
}

.exhib_intro {
    width: 190px;
    font-size: 13.5px;
    overflow: hidden;
    word-break: break-all;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 3;
    line-height: 21px;
    color: #666666;
}

.exhib_intro::after {
    content: '[详情]';
    color: #df0000;
}


.news_ {
    width: 455px;
    display: inline-block;
}

.news_list ul {
    height: 384px;
    margin-top: 10px;
}

.news_list li {
    width: 440px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 15px;
    height: 32px;
    line-height: 32px;
    margin-left: 5px;
}

.news_list li::before {
    content: '•';
    margin-right: 10px;
    color: #df0000;
}


/* 技术文库 */
.techo {
    width: 270px;
    display: inline-block;
}

.techo ul {
    width: 270px;

}

.techo_top h3 {
    font-size: 15px;
    padding: 5px 0;
    display: inline-block;
}

.techo_top {
    /* display: inline-block; */
    font-size: 0;
}

.mo_ {
    display: inline-block;
    float: right;
    color: #666;
    font-size: 13px;
    margin-top: 5px;
}

.techo_hot {
    width: 270px;
    background: #f3f3f3;
    font-size: 0;
    margin: 10px 0;
    padding-bottom: 0;
    border-bottom: 1px dashed #d9d9d9;
}

.techo_hot img {
    width: 122px;
    height: 74px;
}

.techo_hot h3 {
    width: 125px;
    overflow: hidden;
    word-break: break-all;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    line-height: 22px;
    font-size: 14px;
    display: inline-block;
    color: #df0000;
}

.techo_hot img {
    display: inline-block;
}

.techo_list {
    width: 303px;

}

.techo_list li {
    width:260px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 15px;
    height: 33px;
    line-height: 33px;
}

.techo_list li::before {
    content: '▪';
    margin-right: 10px;
    color: #bfbfbf;
}

.video_cont ul {
    width:270px;
    margin-top: 10px;
}

.video_cont img {
    width: 119px;
    height:87px;
}

.video_cont li {
    width: 119px;
    display: inline-block;
    font-size: 0;
}

.video_name {
    width: 119px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 15px;
    margin-top: 3px;

}