html {
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
  box-sizing: border-box;
}

html, body {
  height: 100%;
  margin: 0;
}

*, *:before, *:after {
  box-sizing: inherit;
}

[hidden] {
  display: none !important;
}

demo-app-container-lit-3:not(:defined) {
  display: none;
}

demo-app-container-lit-3:defined {
  display: block;
}