div,p,ul,li{
    margin: 0;
    padding: 0;
}
a{
    text-decoration: none;
}
li{
    list-style: none;
}
#aboutUs{
    width: 100%;
    height: 100%;
    color: #232323;
    font-weight: 500;
    font-family: PingFang SC;
    background-color: #F5F7FD;
}

#aboutUs .about_left{

    background: #F9F9F9;
    border:1px solid #D6D6D6
}
#aboutUs .about_left .left_title{ 
    display: flex;
    align-items: center;
    font-weight: bold;
}
#aboutUs .about_left .left_title i{
    width: 6px;
    height: 30px;
    background: #1C8EFF;
}
#aboutUs .about_left ul li{
    cursor: pointer;
    border-top: 1px solid #ECECEC;
}
#aboutUs .about_left .left_tab .active{
    background-color: #ffffff;
}
#aboutUs .about_right{  
    box-sizing: border-box;
    background: #FFFFFF;
    border: 1px solid #D6D6D6;
}
@media screen and (min-width:751px){
    #aboutUs .w{
        display: flex;
        min-width: 1000px;
        max-width: 1200px;
        margin: auto;
        padding-top: 40px;
    }
    #aboutUs .about_left{
        width: 272px;
        height: 342px;
        font-size: 20px;
    }
    #aboutUs .about_left .left_title{ 
        height: 108px;
        font-size: 30px;
    }
    #aboutUs .about_right{  
        width: 100%;          
        padding:0 44px;
        
    }
    #aboutUs .about_left .left_title i{
        width: 6px;
        margin-right:34px;
    }
    #aboutUs .about_left ul li{
        height: 57px;
        line-height: 57px;
        padding-left:38px;
       
    }
}
@media screen and (max-width:750px){
    #aboutUs .w{
        display: flex;
        width:100%;
        margin: auto;
        padding-top: 40px;
        justify-content: space-between;
    }
    #aboutUs .about_left{
        width:30%;
        height:100%;
        font-size: 14px;
    }
    #aboutUs .about_left .left_title{ 
        height: 108px;
        font-size: 20px;
    }
    #aboutUs .about_right{  
        width: 70%;          
        padding:0 4px;
    }
    #aboutUs .about_left .left_title i{
        width: 3px;
        margin-right:6px;
    }
    #aboutUs .about_left ul li{
        height: 47px;
        line-height: 47px;
        padding-left:18px;
       
    }
}