#main_pict{
    background-image: url(micho_mustbuy_pc_main.png)  !important;
    background-size: 2000px;
    height: 1225px;
    display: block;
}
.guide_agreement_message{display:none;}
@media screen and (max-width: 800px) {
    
    #main_pict{
        background-image: none !important;
        height: auto;
        width: auto;
    }
    .guide_agreement_message{display:none;}

}