* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }

  html,
  body {
    font-family: 'Helvetica', sans-serif;
    overflow: hidden;
    background: #000;
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
  }

  #container {
    position: relative;
    width: 100%;
    height: 100%;
    display: block;
    overflow: hidden;
    line-height: 0;
  }

  #container>* {
    position: absolute;
    display: block;
    user-select: none;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    animation: fadeIn 1.2s;
  }

  canvas {
    display: block;
    position: absolute;
    top: 0;
    left: 0;
  }

  #container>video {
    object-fit: cover;
    object-position: 50% 50%;
  }

  #splash {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #000;
    opacity: 1;
  }

  #overlay {
    position: absolute;
    font-size: 16px;
    z-index: 2;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    background: rgba(0, 0, 0, 0.5);
  }

  #overlay::before {
    position: absolute;
    width: 100%;
    white-space: pre-wrap;
    content: "Please allow access \A to your camera.";
    top: calc(50% + 50px);
    text-align: center;
    color: #949494;
  }

  #overlay button {
    background: transparent;
    border: 1px solid rgb(255, 255, 255);
    border-radius: 4px;
    color: #ffffff;
    padding: 12px 18px;
    text-transform: uppercase;
    cursor: pointer;
  }

  @keyframes fadeIn {
    0% {
      opacity: 0;
    }

    50% {
      opacity: 0.6;
    }

    100% {
      opacity: 1;
    }
  }

  @media screen and (max-device-width: 480px) and (orientation: landscape) {
    #container {
      display: none;
    }

    body::before {
      content: "Rotate device to portrait mode.";
      color: white;
    }
  }

  @media screen and (max-device-width: 480px) and (orientation: portrait) {
    #container {
      display: block;
    }

    body::before {
      content: none;
    }
  }