@charset "utf-8";
@media only screen and (max-width:540px){
  body {
background-color:#000;
background-image:url(https://www.ocean-sky.net/website/w656/image/rating_sp_image_name.jpg);
background-position: 50% 0%;
background-repeat: no-repeat;
  }
}
@media only screen and (min-width:541px){
  body {
background-color:#000;
background-image:url(https://www.ocean-sky.net/website/w656/image/rating_pc_image_name.jpg);
background-position: 50% 0%;
background-repeat: no-repeat;
  }
}