pc-admin/src/components/QRCode/style.less

.qrcode-box {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;

  .qrcode-container {
    padding: 16px;
    flex: none;
  }

  h3 {
    font-size: 24px;
    font-weight: bold;
    line-height: 3em;
  }
}