Markup: templates/output/04-elements/forms/input/range.html
<div class="form-group">
<label for="demoformid-ir">Choose</label>
<input type="range" id="demoformid-ir" value="10"/>
</div>
<div class="form-group has-error">
<label for="demoformid-ir-error">Choose</label>
<input type="range" id="demoformid-ir-error" value="10"/>
<div class="form-group__error" role="alert">This field is required</div>
</div>
Source:
assets/sass/04-elements/_elements.forms.scss, line 183