govuk-frontend/dist/govuk/components/date-input/template-default.html

GOV.UK Frontend contains the code you need to start building a user interface for government platforms and services.

<div class="govuk-form-group">
  <div class="govuk-date-input" id="dob">
    <div class="govuk-date-input__item">
      <div class="govuk-form-group">
        <label class="govuk-label govuk-date-input__label" for="dob-day">
          Day
        </label>
        <input class="govuk-input govuk-date-input__input govuk-input--width-2" id="dob-day" name="day" type="text" inputmode="numeric">
      </div>
    </div>
    <div class="govuk-date-input__item">
      <div class="govuk-form-group">
        <label class="govuk-label govuk-date-input__label" for="dob-month">
          Month
        </label>
        <input class="govuk-input govuk-date-input__input govuk-input--width-2" id="dob-month" name="month" type="text" inputmode="numeric">
      </div>
    </div>
    <div class="govuk-date-input__item">
      <div class="govuk-form-group">
        <label class="govuk-label govuk-date-input__label" for="dob-year">
          Year
        </label>
        <input class="govuk-input govuk-date-input__input govuk-input--width-4" id="dob-year" name="year" type="text" inputmode="numeric">
      </div>
    </div>
  </div>
</div>