.banner_city{
    width: 100%;
    /*height: 810px;*/
    /*background: url("../image/img/banner_city.png");*/
    /*background-size: 100% 100%;*/
    /*background-repeat: no-repeat;*/
}
.china-logo,.english-logo{
    display: inline-block;
    width: 18px;height: 12px;
}
.china-logo{
    background: url("../image/img/f0.png");
}
.english-logo{
    background: url("../image/img/f1.png");
}
@media screen and (min-width:320px) and (max-width:467px){
    .bigTitle{
        font-size: 8px;
    }
    .smallTitle{
        font-size: 8px;
    }
}
@media screen and (max-width:468px){
    .carousel-caption{
        display: none;
    }
}
@media screen and (min-width:468px) and (max-width:767px) {
    .carousel-caption{
        display: none;
    }
}
@media screen and (min-width:768px) and (max-width:1023px) {
    .bigTitle{
        font-size: 28px;
    }
    .smallTitle{
        font-size: 12px;
    }
}
@media screen and (min-width:1024px) and (max-width:1300px){
    .bigTitle{
        font-size: 28px;
    }
    .smallTitle{
        font-size: 12px;
    }
}
@media screen and (min-width:1300px){
    .bigTitle{
        font-size: 72px;
    }
    .smallTitle{
        font-size: 24px;
    }
}