body {
  margin: 0;
  padding: 0;

  background:
    linear-gradient(#bcd6ff, #e8f0ff),
    url("../img/sky.png");

  background-repeat: no-repeat, repeat;
  background-size: 100% 200px, auto; /* ciel en haut + texture répétée */
  background-position: top, top left;

  image-rendering: pixelated;
}