h1 {
    color: green
}

img.img1  {
  border-radius: 4px;
  padding: 5px;
  image-rendering: pixelated;
  width: 160px;
}

img.img2  {
  border-radius: 4px;
  padding: 5px;
  image-rendering: pixelated;
  width: 320px;
}

img.img3  {
  border-radius: 4px;
  padding: 5px;
  image-rendering: pixelated;
  width: 80px;
}