templates/user/DeviceTemplate.html

<div class="container">
    {{#if errorCode}}
        <div class="alert alert-warning col-md-6 col-md-offset-3" role="alert">
            <strong>
                {{t errorCode}}
            </strong>
        </div>
    {{else}}
        <form method="post" class="form col-md-6 col-md-offset-3" autocomplete="off" aria-describedby="deviceFormInfo">
            <fieldset>
                <p id="deviceFormInfo">{{t "form.description"}}</p>

                <div class="form-group">
                    <label class="sr-only" for="deviceUserCode">{{t 'form.code'}}</label>
                    <input type="text" name="user_code" id="deviceUserCode" required class="form-control input-lg" placeholder="{{t 'form.code'}}">
                </div>

                <div class="form-group">
                    <button type="submit" class="btn btn-lg btn-block btn-uppercase btn-primary">{{t "form.submit"}}</button>
                </div>
            </fieldset>
        </form>
    {{/if}}
</div>