body {
    background-color: white;
    color: black;
}

html, body {
    height: 100%;
    font-family: sans-serif;
    font-weight: bold;
    overflow: hidden;
}

#container {
      display: flex;
      flex-direction: column;
      align-items: center;
      height: 100%;
      justify-content: center;
}

#up, #down {
    text-align: center;
}

#up {
    font-size: 1vw;
}

#down {
    font-size: 2vw;
}