html, body {
  height: 100%;
}
body {
  margin: 0;
  padding: 16px;
  background-color: antiquewhite;
  font-family: sans-serif;
}
main {
  min-height: 100%;
  padding: 16px;
  color: white;
  background-color: #6363ec;
  text-align: center;
  border: 6px solid black;
  border-radius: 16px;
}
.zelle-qr-img {
  margin-bottom: 16px;
  width: 256px;
  border: 2px solid black;
  box-shadow: 3px 3px 1px black;
}
.error-container {
  background-color: red;
  padding: 16px;
  border: 3px dashed black;
  border-radius: 8px;
  line-height: 1.5;
}
.highlight {
  color: black;
  background-color: #fbf06f;
  padding: 6px;
}