html, body {
  margin: 0;
  padding: 0;
  overflow: hidden;
  height: 100%;
  background: black;
}

#viewport {
  width: 100vw;
  height: 100vh;
  overflow: scroll;
  position: relative;
}

#camera {
  width: 10000px;
  height: 10000px;
  position: relative;
}

#grid {
  position: relative;
  width: 100%;
  height: 100%;
}

.cell {
  position: absolute;
  width: 150px;
  height: 150px;
  background-color: #111;
  overflow: hidden;
}

.cell img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}