.lgLink, .selectQRCode, .QRCode, .contact{
    margin: auto;
    width: 90%;
    height: 90%;
    padding: 10px;
    text-align: center;
}
.lgLink a, .contact a, .selectQRCode{
    font-family: Tahoma, sans-serif;
    color: #1a3b29;
  }

  .lgLink a, .selectQRCode{
    font-size: 100px;
  }

  .contact a{
    font-size: 30px;
  }