#qrcode {
    margin-top: 2rem;
    width: 160px;
    height: 160px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px dashed #ccc;
    border-radius: 4px;
  }
  #qrcode.has-code {
    border: none;
  }
  #qrcode canvas,
  #qrcode img {
    display: block;
    width: 100%;
    height: 100%;
  }
  .qr-placeholder {
    font-size: 1rem;
    color: #aaa;
    text-align: center;
    line-height: 1.4;
  }