Markup: templates/output/04-elements/forms/input/url.html
<div class="flex__12 powermail_fieldwrap">
<label for="demoformid-webaddress">Your website</label>
<input class="" type="url" id="demoformid-webaddress" name="" placeholder="http://yoursite.com"/>
</div>
<div class="flex__12 powermail_fieldwrap">
<label for="demoformid-webaddress-error">Your website</label>
<input class="" type="url" id="demoformid-webaddress-error" name="" placeholder="http://yoursite.com"/>
<ul class="powermail-errors-list">
<li>This field is required</li>
</ul>
</div>
Source:
assets/sass/04-elements/_elements.forms.scss
, line 119