.main_bg{
    background: url(../images/about_bg1.jpg) center top no-repeat;
    min-width: 1200px;
    min-height: 1421px;
    padding-bottom: 100px;
}
.ef518_bg{
    min-width: 1200px;
    height: 919px; 
    background: url(../images/ef518_bg.jpg) center top no-repeat;
}
#ef518{
    background: url(../images/ef518_2.png) center bottom no-repeat;
    padding-bottom: 600px;
}

#ef518 .content p{
    display: block;
    margin-top: 40px;
    font-size: 22px;
    line-height: 1.8;
}
#ef518 .content p.img{
    margin-top: 80px;
    text-align: center;
}


.tbschina_bg{
    height: 919px; 
    background: url(../images/tbschina_bg.jpg) center top no-repeat;
}
.tbschina_bg .container{
    position: relative;
} 
.tbschina_bg .ewm{
    display: flex;
    align-items: center;
    width: 805px;
    margin: 555px auto 0;
}
.tbschina_bg .ewm img{
    width: 138px;
}
.tbschina_bg .ewm p{
    flex: 1;
    padding: 15px;
    font-size: 26px;
    color:var(--white);
}
.tbschina_bg .ewm p.text_r{
    text-align: right;
}

#tbschina{
    background: url(../images/about_bg1.jpg) center top no-repeat,url(../images/about_bg2.jpg) center bottom no-repeat;
}
#tbschina .layui-row{
    margin-top: 80px;
}
#tbschina .card{
    padding: 35px 25px 60px;
}
#tbschina .card .img{
    text-align: center;
}
#tbschina .card h3{
    margin-top: 20px;
    font-size: 28px;
    color: var(--blue);
    text-align: center;
}
#tbschina .card p{
    margin-top: 40px;
    font-size: 16px;
    color: #666666;
    line-height: 1.8;
}
#tbschina .card:hover{
    border-radius: 10px;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.15);
}
#tbschina .sear{
    margin-top: 60px;
    text-align: center;
}
#tbschina .text{
    background-image: url(../images/tbs_sear.png);
    width: 465px;
    height: 70px;
    padding-left: 60px;
    font-size: 24px;
    font-weight: bold;
    line-height: 70px;
    box-sizing: border-box;
    margin: 0 auto;
}

#tbschina .list{
    margin-top: 60px;
}
#tbschina .item{
    display: flex;
    padding:40px 15px;
    border-radius: 10px;
}
#tbschina .list .img{
    width: 200px;
    margin-right: 30px;
}
#tbschina .list .img img{
    width: 100%;
    height: 140px;
    border-radius: 20px;
}
#tbschina .list .block{
    flex: 1;
}
#tbschina .list h3{
    font-size: 20px;
    color: var(--blue);

}
#tbschina .list .content{
    font-size: 15px;
    line-height: 1.6;
    margin-top: 6px;

}
#tbschina .list .date{
    font-size: 15px;
    color: #76787d;
    margin-top: 16px;

}
#tbschina .list .item:hover{
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.15);

}


@media screen and (max-width: 1441px) {

    .ef518_bg{
        height: 820px; 
    }
    .tbschina_bg{
        height: 820px; 
    }
    .tbschina_bg .ewm {
        margin-top: 510px;
    }
}