#floatbox-overlay {
  align-items: center;
  background: rgba(4, 12, 20, 0.88);
  display: flex;
  inset: 0;
  justify-content: center;
  padding: 40px;
  position: fixed;
  z-index: 10000;
}

#floatbox-overlay[hidden] {
  display: none;
}

#floatbox-overlay img {
  background: #fff;
  box-shadow: 0 16px 50px rgba(0, 0, 0, 0.55);
  max-height: calc(100vh - 80px);
  max-width: calc(100vw - 80px);
  object-fit: contain;
}

#floatbox-overlay button {
  background: #fff;
  border: 0;
  border-radius: 50%;
  cursor: pointer;
  font: bold 24px/36px Arial, sans-serif;
  height: 36px;
  position: absolute;
  right: 18px;
  top: 18px;
  width: 36px;
}