{{ form_start(form) }}
<div class="php-email-form">
    <div class="row">
        <div class="col-md-6 form-group">
            {{ form_widget(form.name) }}
        </div>
        <div class="col-md-6 form-group mt-3 mt-md-0">
            {{ form_widget(form.email) }}
        </div>
    </div>
    <div class="row">
        <div class="form-group mt-3">
            {{ form_widget(form.message) }}
        </div>
    </div>
    <div class="row">
        <div class="form-group mt-3">
            {{ form_row(form.captcha) }}
            {{ form_errors(form.captcha) }}
        </div>
    </div>
    <div class="my-3">
        <div class="loading">Loading</div>
        <div class="error-message"></div>
        <div class="sent-message">Your message has been sent. Thank you!</div>
    </div>
    <div class="text-center">
        <button type="submit">Envoyer</button>
    </div>
</div>
{{ form_end(form) }}