body::after {
  content: "";
  position: fixed;
  right: calc(2rem - (100vw - 100%));
  bottom: 0;
  width: 280px;
  aspect-ratio: 386 / 647;
  background: currentColor;
  -webkit-mask: url(/mascot.png) no-repeat bottom / contain;
  mask: url(/mascot.png) no-repeat bottom / contain;
  pointer-events: none;
}

@media (max-width: 700px) {
  body::after {
    content: none;
  }
}