.fix-btn-box > button {
    padding: 22.4px 0 calc(constant(safe-area-inset-bottom) + 22.4px);
    padding: 22.4px 0 calc(env(safe-area-inset-bottom) + 22.4px);
    height: calc(constant(safe-area-inset-bottom) + 75.8px);
    height: calc(env(safe-area-inset-bottom) + 75.8px);
  }
  
  /* mo */
  @media screen and (max-width: 680px) {
    .fix-btn-box > button {
      padding: 16px 0 calc(constant(safe-area-inset-bottom) + 16px);
      padding: 16px 0 calc(env(safe-area-inset-bottom) + 16px);
      height: calc(constant(safe-area-inset-bottom) + 54px);
      height: calc(env(safe-area-inset-bottom) + 54px);
    }
  }