* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  body {
    font-family: Arial, Helvetica, sans-serif;
  }
  
  .intro {
    height: 100vh;
  }
  
  .intro video {
    height: 100%;
    width: 100%;
    object-fit: contain;
  }