src/styles.css

body, html {
  margin: 0;
  padding: 0;
  font-family: Arial, sans-serif;
  background: url('/assets/background.jpg') no-repeat center center fixed;
  background-size: cover;
}

body.homepage-bg {
  background: url('/assets/background.jpg') no-repeat center center fixed;
  background-size: cover;
}