@media screen and (max-width: 1200px){
.h300{
    height: 200px;
}
    .h6001{
        height: 486px;
    }
    .h600{
        height: 400px;
    }
    .zt_title .font30{
        font-size: 25px;
    }
    .zt_title .padb10,.zt_title .padb20{
        padding-bottom: 10px;
        margin-top: 4px;
        /*font-size: 12px;*/

    }
}
@media screen and (max-width: 992px){
    .zt_title{
        width: 300px;
    }
    .font30{
        font-size: 19px;
    }
    .zt_title .padb10,.zt_title .padb20{
        padding-bottom: 10px;
        margin-top: 8px;
        font-size: 12px;

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

    .h600,.h6001{
        height: auto;
    }

}
@media screen and (max-width: 460px){

   .h300{
    height: 90px;
}
}<!--9.3936920166016E-5-->