.qr_button {
    background: #3498db;
    background-image: -webkit-linear-gradient(top, #3498db, #2980b9);
    background-image: -moz-linear-gradient(top, #3498db, #2980b9);
    background-image: -ms-linear-gradient(top, #3498db, #2980b9);
    background-image: -o-linear-gradient(top, #3498db, #2980b9);
    background-image: linear-gradient(to bottom, #3498db, #2980b9);
    -webkit-border-radius: 13;
    -moz-border-radius: 13;
    border-radius: 13px;
    font-family: Arial;
    color: #ffffff;
    font-size: 15px;
    padding: 10px 20px 10px 20px;
    text-decoration: none;
    width: 140px;
    text-align: center;
  }
  
  .qr_button:hover {
    background: #3cb0fd;
    background-image: -webkit-linear-gradient(top, #3cb0fd, #3498db);
    background-image: -moz-linear-gradient(top, #3cb0fd, #3498db);
    background-image: -ms-linear-gradient(top, #3cb0fd, #3498db);
    background-image: -o-linear-gradient(top, #3cb0fd, #3498db);
    background-image: linear-gradient(to bottom, #3cb0fd, #3498db);
    text-decoration: none;
    cursor: pointer;
  }

  .qr_button a{
      text-decoration: none;
      color:white;
  }