html, body {
  margin: 0;
  min-height: 100%;
}

body {
  background-image: url("background1.jpg");
  background-repeat: no-repeat;
  background-position: center top;
  background-size: cover;
  background-attachment: fixed; /* stays in place while the page scrolls */
  background-color: #000; /* fallback while the image loads */
}
}