HTML-Prototype Schulpaket

<div class="form-group">
  <label for="demoformid-idm">Which month do you like?</label>
  <input class="" type="month" id="demoformid-idm" name="" value="1970-01"/>
</div>
<div class="form-group has-error">
  <label for="demoformid-idm-error">Which month do you like?</label>
  <input class="" type="month" id="demoformid-idm-error" name="" value="1970-01"/>
  <div class="form-group__error" role="alert">This field is required</div>
</div>