@media not screen and (max-width: 40em) {
  html {
    background-image: url("/icons/background.png");
    background-attachment: fixed;
    background-repeat: no-repeat;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
    }
  }

@media only screen and (max-width: 40em) {
  html {
    background-color: #eed;
    }
  }