html, body {
    margin: 0;
    height: 100%;
    background: #000;
    color: #fff;
    font-family: Arial, Helvetica, sans-serif;
  }
  body {
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 0 16px;
    box-sizing: border-box;
  }
  p {
    font-size: 18px;
    line-height: 1.6;
    margin: 0;
  }