.fixed_button {
    padding: 16.8px 0 calc(constant(safe-area-inset-bottom) + 16.8px);
    padding: 16.8px 0 calc(env(safe-area-inset-bottom) + 16.8px);
    height: calc(constant(safe-area-inset-bottom) + 72.8px);
    height: calc(env(safe-area-inset-bottom) + 72.8px);
  }
  
  /* mo */
  @media screen and (max-width: 680px) {
    .fixed_button {
      padding: 19px 0 calc(constant(safe-area-inset-bottom) + 19px);
      padding: 19px 0 calc(env(safe-area-inset-bottom) + 19px);
      height: calc(constant(safe-area-inset-bottom) + 60px);
      height: calc(env(safe-area-inset-bottom) + 60px);
    }
  }