body {
  background-color: white;
  margin: 3rem auto 3rem;
  text-align: center;
  @media screen and (max-width: 768px) {
    background-size: 450px auto;
  }
}
.soukan {
  width: calc(100% - 2rem);
  max-width: calc(1024px - 2rem);
  padding-left: 1rem;
  padding-right: 1rem;
}
.backhome {
  margin-top: 5rem;
  width: 166px;
  height: auto;
  @media screen and (max-width: 768px) {
    width: 84px;
  }
}
.footer {
  font-size: 0.7rem;
  color: #333333;
  margin-top: 3rem;
}