/* Fullscreen background image */
body {
  margin: 0;
  height: 100vh;
  background-image: url('back.png'); /* Replace with your background image */
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  display: flex;
  justify-content: center;
  align-items: center;
}

/* Centered image on top */
img {
  max-width: 90%;
  height: auto;
}