.index .page {
  background-image: url("../images/index_backimage.jpg");
  background-position: center center;
  background-repeat: no-repeat;
  background-size: cover;
  background-attachment: fixed;
}
.index .box{
  height: 100%;
  width: 100%;
  padding-top:0px;
  border: 1px solid;
}
.index .contents{
  margin: 40px;
  padding:30px;
  height: calc(100% - 80px);
  border: 1px solid white;
  color:white;
}
.index .title{
  margin: 0;
  position: absolute;
  top: 50%;
  left: 50%;
  margin-right: -50%;
  transform: translate(-50%, -50%);
}
.index .title-en {
  font-size: 0.9rem;
  letter-spacing: 0.2rem;
  margin-bottom: 0;
}
.index .title-jp {
  font-size: 1.5rem;
}
.index-menu-contents{
  text-align: right;
}
.index .index-menu{
  margin-bottom: 30px;
  z-index:500;
}
.index .index-menu-small{
  font-size: 1rem;
}
.index .copyright{
    width: 100%;
    color: #fff;
    text-align: center;
    padding: 45px 45px;
    position: absolute;/*←絶対位置*/
    bottom: 0; /*下に固定*/
    font-size: 1.0rem;
}
@media (max-width: 480px){
  .index .page {
    background-image: url("../images/sp/index_backimage.jpg");
  }
  .index-menu-contents{
    text-align: center;
  }
}