* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background-image: url("../assets/images/dawn.png");
  background-size: auto 100vh;
  background-repeat: no-repeat;
  background-position: center center;
  display: flex;
  justify-content: center;
  align-items: flex-end;
  height: 100vh;
}

img {
  width: 100%;
  height: auto;
}

@media (min-width: 768px) {
  body {
    background-image: url("../assets/images/night.jpg");
  }
}

@media (min-width: 992px) {
  body {
    background-image: url("../assets/images/sunny-day.jpg");
    background-size: auto;
  }
}