html,
body {
  margin: 0;
  padding: 0;
  height: 100%;
}

#loading-container {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  background-color: #ffffff;
}

html.dark #loading-container {
  background-color: #0d0d0d;
}