@charset "utf-8";

#opening-mv {
 position: fixed;
 top: 0;
 left: 0;
 width: 100vw;
 height: 100vh;
 background-color: #ffffff;
 z-index: 9999;
}

#opening-video,
#opening-image {
 width: 100%;
 height: 100%;
 object-fit: cover;
}

#opening-video {
 display: block;
}

#opening-image {
 display: none;
}

@media screen and (max-width: 768px) {
 #opening-video {
  display: none;
 }

 #opening-image {
  display: block;
 }
}