@media(max-width:1000px){
    
    .center{
        width: 650px;
    }
    
    .toi-center{
        width: 90%;  
    }

    .kokuban{
        width: 100%;
    }

    .ah-content{
        font-size: 16px;
    }

    .r-adv{
        width: 90%;
        float: right;
      }

}

@media(max-width:768px){
    
    .center{
        width: 95%;
    }

    .toi-center{
        width: 100%;  
    }

    .r-adv{
        width: 95%;
        float: right;
      }

    .q-adv{
        width: 95%;
    }

}