body {
  font-family: Arial, sans-serif;
  /* padding: 40px; */
  /* text-align: center; */
}

.image-wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100vh;     /* fit container to viewport height */
  overflow: hidden;  /* avoid scrollbars */
}

.image-wrapper img {
  max-width: 100%;
  max-height: 100%;
  width: auto;        /* prevent stretching */
  height: auto;
  object-fit: contain;
}