/* 导航栏active */
header nav .aboutus::after {
    content: '';
    width: 100%;
    height: 2px;
    background: rgb(214, 35, 36);
    position: absolute;
    bottom: 0;
    left: 0;
    transition: 0.3s;
}
/* banner */
.banner{
    height: 350px;
    width: 100%;
    overflow: hidden;
    /* background: url('../static/aboutus/inb1.jpeg') no-repeat;
    background-size: cover;
    background-position: center; */
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}
/* 导航栏insid */
.nav_inside{
    height: 60px;
    width: 90%;
    max-width: 1200px;
    margin: -26px auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2%;
    border-bottom: 1px solid silver;
    box-shadow: 0 0 10px #75757580;
    border-radius: 15px;
    background: white;
    position: relative;
    z-index: 99;
}
.nav_inside .left_nav{
    width: 75%;
    display: flex;
    justify-content: flex-start;
    align-items: center;
    border-right: 1px solid silver;
    overflow-x: scroll;
}
.nav_inside .left_nav_sp{
    display: none;
}
.nav_inside  .left_nav_sp_hide{
    display: none;
}
.nav_inside .left_nav .item{
    width: 10%;
    height: 60px;
    text-align: center;
    line-height: 60px;
    font-weight: bolder;
    font-size: 0.9em;
    margin-right: 5px;
    position: relative;
    flex-shrink: 0;
}
.nav_inside .left_nav .item::after{
    content: '';
    width: 0%;
    height: 2px;
    background: rgb(214, 35, 36);
    position: absolute;
    bottom: 0;
    left: 0;
    transition: 0.3s;
}
.nav_inside .left_nav .item:hover::after {
    width: 100%;
}
.nav_inside .right_nav{
    width: 25%;
    padding-left: 3%;
    display: flex;
    justify-content: flex-start;
    align-items: center;
    overflow-x: scroll;
}
.nav_inside .right_nav a{
    display: block;
    height: 60px;
    text-align: center;
    line-height: 60px;
    color: #757575;
    font-weight: bolder;
    font-size: 0.9em;
    /*  */
    flex-shrink: 0;
    width: auto;
}
.nav_inside .right_nav a:hover{
    color: rgb(214, 35, 36);
}
.nav_inside .right_nav a:after {
    content: '';
    display: inline-block;
    vertical-align: middle;
    width: 0;
    height: 0;
    margin: -2px 4px 0 8px;
    border: 3px solid rgba(255, 255, 255, 0);
    border-left-color: #757575;
}
.content{
    width: 100%;
    max-width: 1200px;
    margin: auto;
    padding: 3% 0 2% 0!important;
    border-bottom: 1px solid rgb(214, 35, 36);
}
.content h2:nth-child(2){
    color: rgb(214, 35, 36);
}
.content p{
    margin-top: 3%;
    color: rgb(153, 153, 153);
    font-weight: bold;
    line-height: 1.5em;
    text-overflow: ellipsis;
    overflow: hidden;
    white-space: nowrap;
}
/*适配≥≥≥≥≥≥≥ 手机端适配 */
@media screen and (max-width: 1200px) {
    .nav_inside .right_nav{
        display: none;
    }
    .nav_inside .left_nav{
        width: 100%;
    }
    /* 导航栏insid */
    .nav_inside{
        padding: 0;
        position: relative;
    }
    .nav_inside .left_nav{
        display: none;
    }
    .nav_inside .left_nav_sp{
        display: block;
        text-align: center;
        width: 100%;
    }
    .nav_inside .left_nav_sp h2{
        font-size: 1.2em;
    }
    .nav_inside .left_nav_sp h2::after {
        content: '';
        display: inline-block;
        vertical-align: middle;
        margin: 0 0 -3px 10px;
        border-width: 7px;
        border-style: solid dashed dashed dashed;
        border-color: #333 transparent transparent transparent;
    }
    .nav_inside .left_nav_sp_hide{
        display: flex;
        justify-content: center;
        align-items: center;
        flex-direction: column;
        width: 88%;
        height: auto;
        position: absolute;
        top: 60px;
        left: calc(50% - 44%);
        background: white;
        box-shadow: 0 0 10px #75757580;
    }
    .nav_inside .left_nav_sp_hide .item{
        width: 100%;
        height: 45px;
        line-height: 45px;
        border-bottom: 1px solid #75757580;
    }
    .content{
        padding: 40px 4%!important;
    }
}