.bg {
    position: relative;
    width: 100%;
    text-align: center;
    min-width: 1200px;
}
.bg img {
    display: block;
    width: 100%;
}
.bg .zt-phone {
    display: none;
}
.dhq {
    position: absolute;
    left: 26%;
    top: 75%;
    width: 166px;
    height: 127px;
}
.dhq img{
    width: 100%;
    height: 100%;
}
.lgq {
    position: absolute;
    left: 52%;
    top: 93%;
    width: 153px;
    height: 121px;
}
.lgq img{
    width: 100%;
    height: 100%;
}
.dhm {
    position: absolute;
    left: 72%;
    top: 60%;
    width: 65px;
    height: 205px;
}
.dhm img{
    width: 100%;
    height: 100%;
}
@media screen and (max-width: 640px) {
    .bg { min-width: 100%;}
    .bg .zt-phone {
        width: 100%;
        height: 100%;
        display: block;
    }
    .bg .zt-pc {
        display: none;
    }
    .dhq {
        position: absolute;
        left: 11%;
        top: 73%;
        width: 58px;
        height: 46px;
    }
    .dhq img{
        width: 100%;
        height: 100%;
    }
    .lgq {
        position: absolute;
        left: 55%;
        top: 84%;
        width: 66px;
        height: 48px;
    }
    .lgq img{
        width: 100%;
        height: 100%;
    }
    .dhm {
        position: absolute;
        left: 82%;
        top: 60%;
        width: 30px;
        height: 74px;
    }
    .dhm img{
        width: 100%;
        height: 100%;
    }
}