body, html {
  font-family: Roboto, sans-serif;
  height: 100%;
  background: linear-gradient(
    135deg,
    rgb(245, 245, 245),
    rgb(230, 230, 230)
  );
}

html, body { height: 100%; }
body { margin: 0; font-family: Roboto, "Helvetica Neue", sans-serif; }