steffoweb/pages/_app.css

body {
  margin: 0;
  min-height: 100vh;
  background-color: #0d193b;
  background-image: url("/space_default.jpg");
  background-size: cover;
  color: #a0ccff;
}

body > * {
  min-height: 100vh;
}

body > * > * {
  min-height: 100vh;
}