.mobile {
  @media (width >= 40rem) { display: none !important; }
}

.desktop {
  @media (width < 40rem) { display: none !important; }
}

.xwrap {
  max-width: 50rem;
}

.flex-center {
  display: flex;
  justify-content: center;
  align-items: center;
}

.flex-between {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.mx-auto {
  margin-left: auto;
  margin-right: auto;
}

.my {
  margin-block: 6rem;
}

.mx {
  margin-inline: 1rem;
}

.px {
  padding-inline: 1rem;
}

.invisible {
  visibility: hidden;
}