body {
  background-color: black;
  color: white;
  margin: 0;
  font-family: arial, helvetica, sans-serif;
}

.container {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  height: 100dvh;
  width: 100vw;
}

.container img {
  max-width: 80%;
  max-height: 80%;
  object-fit: contain;
  -webkit-mask-image: linear-gradient(to right, transparent, black 1%, black 99%, transparent),
                      linear-gradient(to bottom, transparent, black 1%, black 99%, transparent);
  -webkit-mask-composite: destination-in;
  mask-image: linear-gradient(to right, transparent, black 1%, black 99%, transparent),
              linear-gradient(to bottom, transparent, black 1%, black 99%, transparent);
  mask-composite: intersect;
}

@media (prefers-color-scheme: light) {
  body {
    background-color: white;
    color: black;
  }
}