.firstView{align-items:center;display:flex;justify-content:center}.firstview_pc{background-repeat:no-repeat;background-size:100%;height:53.125vw;margin:0 auto;top:0;width:100vw}.firstview_sp{display:none}@media screen and (max-width:540px){.firstview_pc{display:none}.firstview_sp{background-repeat:no-repeat;background-size:100%;display:block;height:148.71795vw;margin:0 auto;top:0;width:100vw}}