<div class="has-danger">

<select class="select is-invalid">

  <option value="1">One</option>

  <option value="2" selected>Two</option>

  <option value="3">Three</option>

  <option value="4">Four</option>

  <option value="5">Five</option>

</select>

<label class="form-label select-label">Example label</label>

<span class="invalid-feedback" role="alert"><strong>Invalid select state.</strong></span>

</div>