:root {
  --red: #a40d0d;
}

main {
  width: 100%;
  height: 100vh;
  height: 100dvh;
  display: flex;
  justify-content: center;
  align-items: center;
}

main h1 {
  font-size: var(--font-size);
  line-height: var(--line-height);
  text-transform: uppercase;
  color: var(--red);
}