:root {
  --var-bg: #021210;
  --var-c-0: #25201f;
  --var-c-1: #635c5c;
  --var-c-2: #7c746f;
  --var-c-3: #dbccc4;
  --var-c-4: #4c4c46;
  --var-c-5: orange;
}
* {
  transition: background-color 1s ease;
}
html {
  background: var(--var-bg);
}
body {
  background-color: #000000ea;
  margin: 0;
  color: white;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  font-weight: 600;
}