@charset "UTF-8";

.mobile .bkg_change1_sp:before,
.tablet .bkg_change1_sp:before{
  background-image: url(https://kiriyamamiya-ballet.com/wp-content/uploads/2020/04/kv1_sp.png);
}
.mobile .bkg_change2_sp:before,
.tablet .bkg_change2_sp:before{
  background-image: url(https://kiriyamamiya-ballet.com/wp-content/uploads/2020/04/top_kv2.jpg);
}