.introdu-box{
    margin-bottom: 80px;
}


.brand-bxtit {
    display: flex;
    justify-content: center;
    align-items: center;
}

.brand-bxtit a {
    padding: 25px 40px;
    font-size: 24px;
    cursor: pointer;
    position: relative;
}

.h3show {
    font-weight: 600;
}

.h3show::before {
    content: '';
    width: 85px;
    height: 5px;
    background-color: #20cebe;
    border-radius: 5px;
    position: absolute;
    top: 70px;
    left: 50%;
    transform: translateX(-50%);
}



.introdu-bx{
    padding: 10px 0;
}

.introdubx-img{
    width: 100%;
}

.introdubx-img img{
    width: 100%;
    min-height: 600px;
}


.introd-time{
    margin: 70px 120px;
}

.introd-txt{
    margin-bottom: 30px;
    
}
.introd-txt p{
    font-size: 24px;
    line-height: 40px;
    margin-bottom: 10px;
}


@media screen and (max-width: 768px) {

    .introdu-box {
        margin-bottom: .3rem;
    }


    .brand-bxtit {
        display: flex;
        justify-content: center;
        align-items: center;
    }

    .brand-bxtit a {
        padding: .2rem .2rem;
        font-size: .18rem;
        cursor: pointer;
        position: relative;
    }

    .h3show {
        font-weight: 600;
    }

    .h3show::before {
        content: '';
        width: .85rem;
        height: .05rem;
        background-color: #20cebe;
        border-radius: 5px;
        position: absolute;
        top: .6rem;
        left: 50%;
        transform: translateX(-50%);
    }



    .introdu-bx{
        padding: .1rem 0;
    }
    
    .introdubx-img{
        width: 100%;
    }
    
    .introdubx-img img{
        width: 100%;
        min-height: 3rem;
    }
    
    
    .introd-time{
        margin: .5rem .2rem;
    }
    

    .introd-txt{
        margin-bottom: .3rem;
        
    }
    .introd-txt p{
        font-size: .24rem;
        line-height: .4rem;
        margin-bottom: .1rem;
    }


}