splash.css

html, body {
    height: 100%;
    overflow: hidden;
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
      'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
      sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }
  
  html {
    color: #f3f3f3;
    background-color: #27272d;
  }
  
  h1 {
    margin-left: 25px;
  }
  
  .loading-container {
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
  }
  
  
  @keyframes App-logo-spin {
    from {
      transform: rotate(0deg);
    }
    to {
      transform: rotate(360deg);
    }
  }
  
  .react-logo {
    animation: App-logo-spin infinite 5s linear;
  }