html {
  height: 100%;
}

/**
body {
  font-family: sans-serif;
  padding: 0 0px;
  height: 100%;
  background: white;
  margin: 0;
}

h1 {
  color: white;
  margin: 0;
  padding: 15px;
}
*/

#container {
  text-align: center;
  margin: 0;
}

#qr-canvas {
  margin: auto;
  width: calc(100% - 20px); 
  max-width: 400px;
}

#btn-scan-qr {
  cursor: pointer;
}

#btn-scan-qr img {
  height: 85px;
  padding: 0px;
  margin: 0px;
  background: white;
}

#qr-result {
  font-size: 1.2em;
  margin: 20px auto;
  padding: 20px;
  max-width: 700px;
  background-color: white;
}