@media screen and (max-width: 735px) {
    .center1200{
        width: 100vw;
        margin: unset;
        margin-top: 25vw;
    }
    .qldcon{
        background: #FDFCFC;
    }
    .qlldis li div{
        width: 65%
    }
    .qlleft #qllefti.hover{
            background-position-x: 94%;
    }
    .qlleft #qllefti{
        background-position-x: 94%;
    }
    .bighome{
        height: auto;
        background-position: left top;
        line-height: auto;
        font-size: 18px;
    }
    .leader{
        width: 100vw;
        padding: 4vw;
        box-sizing: border-box;
    }
    .qlleft{
        width: 100%;
    }
    .qlright{
        width: unset;
    }
    .qlc{
        width: 100%;
        margin-left: unset;
    }
}