/* Center the image horizontally and vertically */
html, body {
  height: 100%;
}
body {
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #f6f6f6;
}

#center-image {
  display: block;
  max-width: 90vw;   /* responsive limit */
  max-height: 90vh;  /* responsive limit */
  width: auto;
  height: auto;
  object-fit: contain;
  box-shadow: 0 6px 18px rgba(0,0,0,0.12);
  border-radius: 4px;
}