html {
  font-size: 62.5%; /* This resets the root font-size to 10px so 1rem = 10ox. */
}

body {
  margin: 0;
  padding: 0;
  font-family: sans-serif;
  color: white;
  background: #222;
}

.site {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    min-height: 100vh;
}

.logo {
    width: 10rem;
}