<div class="form-outline datepicker">

  <input 

    type="text"

    class="form-control"

    id="exampleDatepicker11"

    data-mdb-input-mask="dd/mm/yyyy"

    data-mdb-custom-mask="d,m,y"

    data-mdb-custom-validator="[0-9],[0-9],[0-9]"

    data-mdb-mask-placeholder="true"

    data-mdb-char-placeholder="dd/mm/yyyy"

  />

  <label for="exampleDatepicker11" class="form-label">Select a date</label>

</div>