body, html{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  background-color: black;
}

#video {
  width: 100vw;
  max-width:100%;
}

#canvas {
  display: none;
}

#switch-camera-btn {
  width: 100vw;
  max-width: 100%;
  height: 64px;
  position: fixed;
  margin-left: auto;
  margin-right: auto;
  bottom: 0;
  background-color: gray;
  font-size: 32px;
  font-family: inherit;
  color: white;
}

.wrapper {
  font-size: 16px;
  font-family: monospace;
}