.nav-list{
    display: flex;
    height: 40px;
    padding-top: 15px;
    font-size: 16px;
}
.one-nav{
    list-style: none;
    padding: 0 15px;
    position: relative;
}
.one-nav:hover{
    color: #FFF;
}
.subs{
    position: absolute;
    list-style: none;
    padding-left: 0;
    background: rgba(0, 0, 0, 0.4);
    left: -50%;
    height: 0;
    top: 25px;
    transform: translate(30%, 10px);
    overflow: hidden;
    transition: all .5s;
}


.banners{
    width: 100%;
    position: relative;
    overflow: hidden;
}
.bg-img video{
   min-width: 100%;

}
.about-top{
    z-index: 999;
    position: absolute;
    margin: 0 5%;
    width: 90%;
    color: #FFF;
    text-align: center;
    top: 40%;
}
.logo-about{
    width: 100%;
    text-align: center;
}
.cover{
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    background-color: rgb(41 119 157 0.32);
}
.contentst{
    background: #b2b2b2;
    padding-bottom: 40px;
}
.h1-title{
    text-align: center;
    margin: 0;
    padding: 30px 0;
    color: #FFF;
}
.h2-title{
    text-align: center;
    margin: 0;
    padding: 30px 0;
    font-weight: 500;
    
}
.about-cont{
    width: 60%;
    margin: 0 20%;
    color: #FFF;
}
.p-title{
    font-size: 1.2em;
    line-height: 80px;
    font-weight: 600;
}
.pt{
    line-height: 30px;    
}
.kh{
    background: #fbfbfb;
    padding-bottom: 30px;
}
.one-kh{
    text-align: center;
    margin: 5px 0;
}
.fz{
    padding: 0 15%;
}
.ys{
    padding-bottom: 60px;
}
.layui-timeline-title{
    font-size: 1.2em;
}
.layui-timeline-axis{
    color: #0d3b70;
}
.b-list{
    padding:0 20%;
    display: flex;
    flex-wrap: wrap;
}
.one-list{
    width: 31%;
    margin: 10px 1%;
    position: relative;
}
.b-cover{
    width: 100%;
    height: 100%;
    position:absolute;
    top: 0;
    left: 0;
    background: rgba(0, 0, 0, 0.3);
    overflow: hidden;
    cursor: pointer;
    color: #FFF;
}
.b-title{
    text-align: center;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 1.5em;
    font-weight: 700;
    transition: all .3s;
    opacity: 1;
}
.b-desc{
    position: absolute;
    top: 200%;
    transform: translate(-0, -50%);
    padding: 0 15%;
    transition: all .5s;
}
.b-cover:hover .b-title{
    opacity: 0;
}
.b-cover:hover .b-desc{
    top: 50%;
}
.brand{
    background: #f2f2f1;
    text-align: center;
    padding-bottom: 60px;
}
@media(max-width:480px){
    .about-cont{
        width: 94%;
        margin: 3%;
    }
    .b-list{
        padding:0 2%;
        display: flex;
        flex-wrap: wrap;
    }
    .one-list{
        width: 48%;
        margin: 10px 1%;
        position: relative;
    }
    .fz{
        padding: 0 5%;
    }
}