/**
 * app.css
 */

* {
  -moz-box-sizing: border-box;
  box-sizing: border-box;
}

body {
  background-color: red;
  background-image: url("background.png");
  font-size: 18px;
}

p {
  color: purple !important;
}

@media screen and (min-width: 600px) {
  body {
    background-color: green;
    background-image: url("background-600.png");
    font-size: 21px;
  }
}