body{
    color: #333;
}
a{
    color: #333;
}
.flex{
    display: flex;
    justify-content: space-between;
}
.ttld_center{
    width: 95%;
    margin: 0 auto;
}
.burger{
    display: none;
}
.section{
    padding-top: 100px;
}


/* header-头部 */
.header{
    width: 100%;    
    position: fixed;
    top: 0;
    left: 0;
    z-index: 999;
    background:rgba(0,0,0,.3);
    border-bottom: 1px solid rgba(255, 255, 255, .2);
}
.header .header_wrap{
    height: 100px;
    justify-content: space-between;
    align-items: center;
}
.header .header_wrap .logo{
    flex: 1;
}
.header .header_wrap .logo .caise{
    display: none;
}
.header ul li a{
    color: white;
}
.header ul li a:hover{
    color: #eb3c00;
}
.header ul li .nav_active{
    color: #eb3c00;
}
.navigation li a{
    font-size: 18px;
    color: white;
    margin-right: 58px;
    line-height: 100px;
}
.dianhua{
    align-items: center;
}
.dianhua .icon_2{
    display: none;
} 
.dianhua p{
    font-size: 20px;
    color: white;
    margin-left: 6px;
    font-weight: 600;
}

.header_white{
    background-color: white;
    box-shadow: 0 0 15px rgba(12, 147, 241, .1);
}
.header_white ul li a{
    color: #333;
}
.header_white .dianhua p{
    color: #00408f;
}
.header_white .header_wrap .logo .caise{
    display: block;
}
.header_white .header_wrap .logo .white{
    display: none;
}
.header_white .dianhua .icon_1{
    display: none;
}
.header_white .dianhua .icon_2{
    display: block;
}


/* banner */
.ttld_banner{overflow:hidden; padding:0; position:relative;}
#banner_swiper{width:100%;}
.ttld_banner .swiper-slide img{width:100%; height:100%;}
.ttld_banner .swiper-pagination{bottom:20px !important;}
.ttld_banner .one img,.ttld_banner .two img{width:auto !important; height: auto !important;}
.ttld_banner .one{position:absolute; top:50%; transform:translateY(-50%); left:5%; z-index:2;} 
.ttld_banner .one .bn_icon{width:70px; height:70px; display:block;}
.ttld_banner .one .bn_t1{margin-top:50px;}
.ttld_banner .one .btnDiv{margin-top:4rem; width:180px; height:44px; line-height:44px; background:#0c91ee; text-align:center; color: #fff; font-size:18px; border-top-left-radius:30px; border-bottom-right-radius:30px; box-shadow:0 5px 15px rgba(0,0,0,.5);}
.ttld_banner .two{position: absolute; left:50%; width:100%; top:14%; transform:translateX(-50%); text-align:center;} 
.ttld_banner .two .bn_t1{margin-bottom:20px;}
.ttld_banner .swiper-slide video{position:absolute; width:100%; left:0; top:50%; transform: translateY(-50%);}

.align_items_center{align-items: center;}
.ttld_footer{padding-top: 40px !important;}


/* product */
.ttld_product{
    background: url(../image/pro-bg.jpg) no-repeat;
    background-size: 100% 100%;
}
.ttld_product #pro_thumbs .swiper-slide{
    text-align: center;
    font-size: 22px;
    color: #333;
    padding-bottom: 2%;
    border-bottom: 2px solid rgba(255, 255, 255, .3);
}
.ttld_product #pro_thumbs .swiper-slide .icon_box{
    width: 58px;
    height: 58px;
    margin: 0 auto;
    margin-bottom: 6%;
    overflow: hidden;
}
.ttld_product #pro_thumbs .swiper-slide .icon_box img{
    height: 100%;
    transform: translateX(-50%);
    transition: all .3s ease-in-out;
}
.ttld_product #pro_thumbs .swiper-slide-thumb-active{
    border-bottom: 2px solid #0c93f1;
    color: #0c93f1;
}
.ttld_product #pro_thumbs .swiper-slide-thumb-active .icon_box img{
    transform: translateX(0%);
}
#pro_swiper .swiper-slide{
    padding-top: 3%;
}
#pro_swiper .swiper-slide .item{
    width: 24%;
    display: block;
    box-sizing: border-box;
    background-color: white;
    transition: all .3s ease-in-out;
}
#pro_swiper .swiper-slide .item .pro_img{
    padding: 9%;
}
#pro_swiper .swiper-slide .item .pro_img img{
    width: 100%;
}
#pro_swiper .swiper-slide .item .pro_text{
    padding: 9%;
    border-top: 1px solid rgba(0, 0, 0, .1);
}
#pro_swiper .swiper-slide .item .pro_text h3{
    font-size: 22px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
#pro_swiper .swiper-slide .item .pro_text p{
    font-size: 18px;
    line-height: 26px;
    margin-top: 6%;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}
#pro_swiper .swiper-slide .item .jiantou{
    width: 13%;
    background-color: #0c93f1;
    margin-left: 87%;
    text-align: center;
    padding: 3.5% 0;
    transition: all .3s ease-in-out;
    justify-content: center;
    align-items: center;
}
#pro_swiper .swiper-slide .item .jiantou img{
    width: auto;
}
#pro_swiper .swiper-slide .item:hover{
    transform: translateY(-15px);
    color: #0c93f1;
}
#pro_swiper .swiper-slide .item:hover .jiantou{
    width: 100%;
    margin-left: 0;
}


/* quality */
.ttld_quality{
    background: url(../image/quality-bg.jpg) no-repeat;
    background-size: 100% 100%;
}
.ttld_quality_wrap{
    width: 600px;
    height: 600px;
    color: white;
    margin: 0 auto;
    position: relative;
    transition: 0.5s ease 0s;
}
.ttld_quality_wrap i:after{
    content: "";
    display: block;
    width: 600px;
    height: 600px;
    margin:0 auto;
    border:2px dashed white;
    border-radius: 50%;
    animation: a2 15s linear 0s infinite;
}

@keyframes a2 { 100% {
transform:rotate(360deg);
}
}
.ttld_quality_wrap .zhong_text{
    width: 60%;
    margin: 0 auto;
    text-align: center;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%,-30%);
}
.ttld_quality_wrap .zhong_text h3{
    font-size: 2.4rem;
}
.ttld_quality_wrap .zhong_text p{
    padding: 6%;
    font-size: 20px;
    line-height: 30px;
}
.ttld_quality_wrap .item_1{
    position: absolute;
    top: -8%;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    font-size: 20px;
    z-index: 2;
    cursor: pointer;
}
.ttld_quality_wrap .item_1 .num{
    width: 24px;
    height: 24px;
    margin: 0 auto;
    line-height: 24px;
    font-size: 18px;
    font-weight: 600;
    color: #00408f;
    border-radius: 50%;
    background-color: white;
    margin-top: 16px;
}
.ttld_quality_wrap .quality_left{
    position: absolute;
    top: 6%;
    left: -7%;
    z-index: 1;
}
.ttld_quality_wrap .quality_left .left_item{
    justify-content: end;
    margin-bottom: 25%;
    position: relative;
    cursor: pointer;
}
.ttld_quality_wrap .quality_left .left_item:nth-child(1){
    transform: translateX(-15%);
}
.ttld_quality_wrap .quality_left .left_item:nth-child(2){
    transform: translateX(-52%);
}
.ttld_quality_wrap .quality_left .left_item:nth-child(3){
    transform: translateX(-69%);
}
.ttld_quality_wrap .quality_left .left_item:nth-child(4){
    transform: translateX(-77%);
}
.ttld_quality_wrap .quality_left .left_item:nth-child(5){
    transform: translateX(-73%);
}
.ttld_quality_wrap .quality_left .left_item:nth-child(6){
    transform: translateX(-59%);
}
.ttld_quality_wrap .quality_left .left_item:nth-child(7){
    transform: translateX(-28%);
}
.ttld_quality_wrap .quality_left .left_item:last-child{
    margin-bottom: 0;
}
.ttld_quality_wrap .quality_left .left_item p{
    line-height: 24px;
    margin-right: 16px;
    font-size: 20px;
}
.ttld_quality_wrap .quality_left .left_item .num{
    width: 24px;
    height: 24px;
    line-height: 24px;
    font-size: 18px;
    font-weight: 600;
    color: #00408f;
    border-radius: 50%;
    background-color: white;
    text-align: center;
}
.ttld_quality_wrap .quality_right{
    left: auto;
    right: -4%;
}
.ttld_quality_wrap .quality_right .left_item{
    justify-content: start;
    margin-bottom: 35%;
}
.ttld_quality_wrap .quality_right .left_item:nth-child(1){
    transform: translateX(20%);
}
.ttld_quality_wrap .quality_right .left_item:nth-child(2){
    transform: translateX(67%);
}
.ttld_quality_wrap .quality_right .left_item:nth-child(3){
    transform: translateX(83%);
}
.ttld_quality_wrap .quality_right .left_item:nth-child(4){
    transform: translateX(82%);
}
.ttld_quality_wrap .quality_right .left_item:nth-child(5){
    transform: translateX(66%);
}
.ttld_quality_wrap .quality_right .left_item:nth-child(6){
    transform: translateX(25%);
}
.ttld_quality_wrap .quality_right .left_item p{
    margin-left: 16px;
    margin-right: 0;
}
.ttld_quality_wrap .xq_quality{
    display: none;
    width: 312px;
    padding: 10px;
    box-sizing: border-box;
    position: absolute;
    top: -55%;
    left: 120%;
    z-index: 20;
    background-color: white;
    color: #333;
    font-size: 17px;
    line-height: 28px;
    text-align: left;
    padding-bottom: 50px;
    transition: all .3s linear;
}
.ttld_quality_wrap .xq_quality::after{
    content: '';
    display: block;
    width: 0;
    height: 0;
    border-top: 10px solid transparent;
    border-bottom: 10px solid transparent;
    border-right: 12px solid white;
    position: absolute;
    top: 10%;
    left: -11px;
}

.ttld_quality_wrap .xq_quality img{
    width: 100%;
}
.ttld_quality_wrap .xq_quality li{
    padding-left: 20px;
    position: relative;
}
.ttld_quality_wrap .xq_quality li::before{
    content: '';
    display: block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: #0c93f1;
    position: absolute;
    top: 11px;
    left: 5px;
}
.ttld_quality_wrap .item_1:hover .xq_quality{
    display: block;
}
.ttld_quality_wrap .quality_left .left_item:hover .xq_quality{
    display: block;
}
.ttld_quality_wrap .quality_left .left_item .xq_quality{
    left: auto;
    top: -136%;
    right: 92%;
}
.ttld_quality_wrap .quality_left .left_item .xq_quality::after{
    border-right: none;
    border-left: 12px solid white;
    top: 10%;
    left: auto;
    right: -11px;
}
.ttld_quality_wrap .quality_left .left_item:nth-child(3) .xq_quality,
.ttld_quality_wrap .quality_left .left_item:nth-child(4) .xq_quality,
.ttld_quality_wrap .quality_left .left_item:nth-child(5) .xq_quality,
.ttld_quality_wrap .quality_left .left_item:nth-child(6) .xq_quality,
.ttld_quality_wrap .quality_left .left_item:nth-child(7) .xq_quality{
    top: auto;
    bottom: -130%;
    right: 100%;
}
.ttld_quality_wrap .quality_left .left_item:nth-child(3) .xq_quality::after,
.ttld_quality_wrap .quality_left .left_item:nth-child(4) .xq_quality::after,
.ttld_quality_wrap .quality_left .left_item:nth-child(5) .xq_quality::after,
.ttld_quality_wrap .quality_left .left_item:nth-child(6) .xq_quality::after,
.ttld_quality_wrap .quality_left .left_item:nth-child(7) .xq_quality::after{
    top: auto;
    bottom: 10%;
}
.ttld_quality_wrap .quality_right .left_item .xq_quality{
    right: auto;
    left: 120%;
}
.ttld_quality_wrap .quality_right .left_item:nth-child(3) .xq_quality{
    right: auto;
    left: 110%;
}
.ttld_quality_wrap .quality_right .left_item .xq_quality::after{
    border-left: none;
    border-right: 12px solid white;
    right: auto;
    left: -11px;
}


/* yingyong */

.ttld_yingyong{
    padding: 0;
    position: relative;
    overflow: hidden;
}
.ttld_yingyong>h3{
    font-size: 40px;
    position: absolute;
    top: 20%;
    left: 8.5%;
    z-index: 30;
    color: white;
}
#yingyong_swiper .swiper-slide{
    position: relative;
    overflow: hidden;
}
#yingyong_swiper .swiper-slide .img_box{
    width: 100%;
}
#yingyong_swiper .swiper-slide .img_box img{
    width: 100%;
}
#yingyong_swiper .swiper-slide .text{
    width: 50%;
    position: absolute;
    left: 8.5%;
    top: 30%;
    color: white;
}
#yingyong_swiper .swiper-slide .text h3{
    font-size: 28px;
    position: relative;
    padding-bottom: 3%;
    margin-bottom: 4%;
}
#yingyong_swiper .swiper-slide .text h3::after{
    content: '';
    display: block;
    width: 3%;
    height: 3px;
    background-color: white;
    position: absolute;
    bottom: 0;
    left: 0;
}
#yingyong_swiper .swiper-slide .text p{
    font-size: 18px;
    line-height: 36px;
    margin-bottom: 8%;
}
#yingyong_swiper .swiper-slide .text a{
    font-size: 18px;
    color: white;
    padding: 1% 3.5%;
    border-radius: 30px;
    border: 1px solid white;
}
#yingyong_thumbs{
    width: 100%;
    box-sizing: border-box;
    background-color: rgba(255, 255, 255, .8);
    position: absolute;
    bottom: 0;
    left: 0;
    z-index: 10;
    padding: 0 8.5%;
}

#yingyong_thumbs .swiper-slide{
    text-align: center;
    font-size: 22px;
    padding: 1% 0;
    color: #0c93f1;
}
#yingyong_thumbs .swiper-slide .icon_img{
    width: 70px;
    height: 60px;
    overflow: hidden;
    margin: 0 auto;
    margin-bottom: 14px;
}
#yingyong_thumbs .swiper-slide .icon_img img{
    height: 100%;
    transition: all .3s linear;
}
#yingyong_thumbs .swiper-slide.swiper-slide-thumb-active{
    background-color: #0c93f1;
    color: white;
}
#yingyong_thumbs .swiper-slide.swiper-slide-thumb-active img{
    margin-left: -100%;
}


/* about */

.ttld_about{
    background: url(../image/about-bg.jpg);
}
.ttld_about .about_wrap .about_text{
    width: 51%;
    flex-direction: column;
}
.ttld_about .about_wrap .about_text h3{
    font-size: 38px;
    position: relative;
    z-index: 1;
    margin-bottom: 5%;
}
.ttld_about .about_wrap .about_text h3::after{
    content: 'ABOUT US';
    font-size: 90px;
    opacity: .03;
    position: absolute;
    top: -3px;
    left: -9px;
    z-index: -1;
}
.ttld_about .about_wrap .about_text h3 span{
    color: #0c93f1;
}
.ttld_about .about_wrap .about_text h4{
    font-size: 28px;
}
.ttld_about .about_wrap .about_text p{
    font-size: 18px;
    line-height: 36px;
}
.ttld_about .about_wrap .about_text a{
    display: block;
    background-color: #0c93f1;
    width: 20%;
    color: white;
    text-align: center;
    padding: 1.5% 0;
}
.ttld_about .about_wrap .about_text .number{
    background-color: white;
    box-shadow: 0 0 15px rgba(12, 147, 241, .1);
}
.ttld_about .number .numCount .item{
    font-size: 46px;
    color: #0c93f1;
    font-weight: 600;
}
.ttld_about .number{
    padding: 3%;
    border-radius: 10px;
}
.ttld_about .number .numCount li{
    flex: 1;
}
.ttld_about .number .numCount .item .unitC{
    font-size: 30px;
}
.ttld_about .number .numCount .item .xiantiao{
    width: 22px;
    height: 2px;
    background-color: #333;
    margin: 10% 0;
}
.ttld_about .number .numCount .item .indc{
    font-size: 20px;
    color: #333;
    font-weight: 500;
}
.ttld_about .about_wrap .about_img{
    width: 47%;
    border-top-left-radius: 100px;
    overflow: hidden;
}
.ttld_about .about_wrap .about_img img{
    width: 100%;
}
.ttld_about .about_wrap .about_img video{
    width:100%;
    min-height: 740px;
    object-fit: cover;
    border-top-left-radius: 100px;
    overflow: hidden;
}

/* advantage */
.ttld_advantage{

}
.ttld_advantage .ttld_advantage_wrap{
    width: 100%;
    height: 100%;
}
.ttld_advantage .ttld_advantage_wrap .item{
    /* flex: 1; */
    width: 25%;
    height: 100%;
    box-sizing: border-box;
    background-size: auto 100%;
    color: white;
    padding: 0 3%;
    padding-top: 20%;
    transition: all .3s linear;
}
.ttld_advantage .ttld_advantage_wrap .item:nth-child(1){
    background: url(../image/advantage-1.jpg) no-repeat;
}
.ttld_advantage .ttld_advantage_wrap .item:nth-child(2){
    background: url(../image/advantage-2.jpg) no-repeat;
}
.ttld_advantage .ttld_advantage_wrap .item:nth-child(3){
    background: url(../image/advantage-3.jpg) no-repeat;
}
.ttld_advantage .ttld_advantage_wrap .item:nth-child(4){
    background: url(../image/advantage-4.jpg) no-repeat;
}
.ttld_advantage .ttld_advantage_wrap .item h3{
    font-size: 30px;
    margin-top: 5%;
    margin-bottom: 2%;
}
.ttld_advantage .ttld_advantage_wrap .item>p{
    font-size: 12px;
    opacity: .5;
    text-transform: uppercase;
}
.ttld_advantage .ttld_advantage_wrap .item .wenan{
    margin-top: 12%;
    width: 100%;
    height: 0;
    overflow: hidden;
    transition: all .3s linear;
}
.ttld_advantage .ttld_advantage_wrap .item .wenan p{
    font-size: 18px;
    line-height: 36px;
}
.ttld_advantage .ttld_advantage_wrap .item:hover{
    width: 60%;
    padding-top: 10%;
}
.ttld_advantage .ttld_advantage_wrap .item:hover .wenan{
    height: 350px;
}


/* news */
.ttld_news .news_wrap{
    margin-top: 3.5%;
}
.ttld_news .news_wrap .news_title{
    align-items: center;
    margin-bottom: 5%;
}
.ttld_news .news_wrap .news_title h3{
    font-size: 38px;
    position: relative;
    z-index: 1;
    flex: 1;
}
.ttld_news .news_wrap .news_title h3 span{
    color: #0c93f1;
}
.ttld_news .news_wrap .news_title h3::after{
    content: 'NEWS CENTER';
    color: #333;
    font-weight: 700;
    position: absolute;
    top: 0;
    left: 0;
    z-index: -1;
    font-size: 70px;
    opacity: 0.05;
}
.ttld_news .news_wrap .news_title .gs_hy a{
    font-size: 20px;
    margin-left: 30px;
}
.ttld_news .news_wrap .news_title .gs_hy .news_ac{
    color: #0c93f1;
}
.ttld_news .news_wrap .news_title .gs_hy a:hover{
    color: #0c93f1;
}
.ttld_news .news_wrap .swiper-slide{
    box-sizing: border-box;
    padding: 2.5% 2%;
    color: #999;
    transition: all .3s ease;
    background-color: #f2f6fa;
    border-radius: 10px;
    overflow: hidden;
}
.ttld_news .news_wrap .swiper-slide .p1{
    font-size: 16px;
    padding-bottom: 9%;
    border-bottom: 1px solid #d5d5d5;
    position: relative;
}
.ttld_news .news_wrap .swiper-slide .p1::after{
    content: '>';
    font-size: 18px;
    position: absolute;
    top: 0;
    right: 0;
}
.ttld_news .news_wrap .swiper-slide h3{
    font-size: 50px;
    margin: 6% 0;
}
.ttld_news .news_wrap .swiper-slide .p2{
    font-size: 18px;
}
.ttld_news .news_wrap .swiper-slide h2{
    font-size: 20px;
    line-height: 28px;
    font-weight: 600;
    margin: 8% 0;
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
    transition: all .3s ease;
}
.ttld_news .news_wrap .swiper-slide .news_img img{
    width: 100%;
}
.ttld_news .news_wrap .swiper-slide:hover{
    background-color: #0c93f1;
    color: white;
    transform: translateY(-15px);
}
.ttld_news .news_wrap .news_more a{
    display: none;
    font-size: 18px;
    text-align: center;
    width: 10%;
    padding: 1% 0;
    background-color: #0c93f1;
    color: white;
    margin: 0 auto;
    margin-top: 3%;
}

/* footer */

.ttld_footer{
    background-color: #24292d;
}
.ttld_footer .footer_top{
    color: white;
}
.ttld_footer .footer_top .lianjie{
    width: 49%;
    box-sizing: border-box;
    padding-right: 5%;
    border-right: 1px solid #3f4347;
}
.ttld_footer .footer_top .lianjie li ul li{
    margin-bottom: 20%;
}
.ttld_footer .footer_top .lianjie li ul li a{
    color: white;
    font-size: 17px;
    opacity: .6;
}
.ttld_footer .footer_top .lianjie li ul li:nth-child(1) a{
    font-size: 20px;
    opacity: .9;
}
.ttld_footer .footer_top .lianjie li ul li a:hover{
    opacity: 1;
}
.ttld_footer .footer_top .lianxi{
    padding-right: 4%;
    border-right: 1px solid #3f4347;
}
.ttld_footer .footer_top .lianxi li{
    font-size: 17px;
    opacity: .6;
    margin-bottom: 4%;
}
.ttld_footer .footer_top .lianxi li:nth-child(1){
    font-size: 20px;
    opacity: .9;
}
.ttld_footer .footer_top .ewm li{
    font-size: 17px;
    text-align: center;
}
.ttld_footer .footer_top .ewm li:nth-child(2){
    margin-top: 10%;
}
.ttld_footer .footer_bottom{
    margin-top: 2%;
    align-items: center;
    padding: 1% 0;
    border-top: 1px solid #3f4347;
}
.ttld_footer .footer_bottom p{
    color: white;
    opacity: .8;
}
.ttld_footer .footer_bottom p a{
    color: white;
}



/* 二级导航 */
.erji_nav{
    display: none;
    width: 55%;
    max-width: 100%;
    background-color: white;
    position: absolute;
    top: 100px;
    right: 2.5%;
    z-index: 998;
    border-top: 1px solid #00408f;
    border-radius: 0 0 5px 5px;
    box-sizing: border-box;
}
.erji_nav .erji_wrap{
    width: 100%;
}
.erji_nav .erji_wrap .erji_l{
    width: 30%;
    min-height: 420px;
    float: left;
    padding: 20px 3%;
    background: #f9f9f9;
}

.erji_nav .erji_wrap .erji_l ul li a{
    color: #333 !important;
    line-height: 40px !important;
    position: relative;
    margin-right: 0 !important;
    transition: all .3s;
    -webkit-transition: all .3s;
}

.erji_nav .erji_wrap .erji_l ul li a:hover,.erji_nav .erji_wrap .erji_l ul li a.cur{
    color: #0c93f1 !important;
    font-size:18px;
    font-weight:bold;
    background:url(../image/icon-more.png) no-repeat right center;
    display: block;
}
.erji_nav .erji_wrap .erji_r{
    width: 54%;
    padding: 2% 5%;
    float: right;
    overflow: hidden;
}
.erji_nav .erji_wrap .erji_r img{
    width: 100%;
}
.erji_nav .erji_wrap .erji_r h3{
    font-size: 24px;
    color: #0c93f1;
    line-height: 40px;
    font-weight: normal;
    margin-top: 10px;
}
.erji_nav .erji_wrap .erji_r h3:after{
    content:"";
    display: block;
    width:30px;
    height: 2px;
    background: #d6d6d6;
    margin-top: 10px;
}

@media (max-width:1600px) {
   .header,
   .banner_swiper,
   .ttld_product_wrap,
   .ttld_quality_wrap,
   #yingyong_swiper,
   #yingyong_thumbs,
   .about_wrap,
   .ttld_advantage_wrap,
   .news_wrap,
   .footer_top,
   .footer_bottom{
       zoom: 0.9;
   } 
   .navigation li a{
        margin-right: 40px;
   }
}
@media (max-width:1500px) {
   .header,
   .banner_swiper,
   .ttld_product_wrap,
   .ttld_quality_wrap,
   #yingyong_swiper,
   #yingyong_thumbs,
   .about_wrap,
   .ttld_advantage_wrap,
   .news_wrap,
   .footer_top,
   .footer_bottom{
       zoom: 0.85;
   } 
   .navigation li a{
        margin-right: 40px;
   }
}