<input autocomplete="cc-number" class="form-control" id="optimized-cc-card-number" maxlength="19" pattern="^(?:4[0-9]{12}(?:[0-9]{3})?|5[1-5][0-9]{14}|3[47][0-9]{13}|3(?:0[0-5]|[68][0-9])[0-9]{11}|6(?:011|5[0-9]{2})[0-9]{12}|(?:2131|1800|35\d{3})\d{11})$" required="" type="tel" value=""/>