Estructura HTML formulario

<?php
/**
 * Template for the contact page form data
 * - Used within the loop
 */
?>


<?php
// Get address defaults
$c_addr_1 = get_post_meta(get_the_ID(), '_contact_addr_1', true);
$c_addr_2 = get_post_meta(get_the_ID(), '_contact_addr_2', true);
$c_addr = trim( $c_addr_1 . ' ' . $c_addr_2 );

// Get phone default
$c_tel = get_post_meta(get_the_ID(), '_contact_phone', true);

// Get email default
$c_email = get_post_meta(get_the_ID(), '_contact_email', true);

// Get text defaults
$c_text_1 = get_post_meta(get_the_ID(), '_contact_text_1', true);
$c_text_2 = get_post_meta(get_the_ID(), '_contact_text_2', true);

?>


<script src="https://www.google.com/recaptcha/api.js" async defer></script>

<div class="container">
  <div class="contact">
    <div class="col-md-6 col-md-offset-3">
      <div class="form-area">
              <div class="text-center contact-h"><?php the_title();?></div>
            <?php echo $response; ?>
            <form id="contact-form" action="<?php the_permalink(); ?>" method="post">
                  <div class="group form-group">
                      <input class="form-control" id="name" type="text" name="message_name" value="<?php if (isset($_POST['message_name'])) { echo esc_attr($_POST['message_name']);} ?>">
                      <span class="highlight"></span>
                      <span class="bar"></span>
                      <label for="name">Name</label>
                  </div><!-- end div group form-group -->
                  <div class="group form-group">
                      <input class="form-control"  id="email" type="email" name="message_email" value="<?php if (isset($_POST['message_email'])) { echo esc_attr($_POST['message_email']);} ?>">
                      <span class="highlight"></span>
                      <span class="bar"></span>
                      <label for="message_email">Email</label>
                  </div><!-- end div group form-group -->
                  <div class="group form-group">
                      <input class="form-control"  id="phone" type="tel" name="message_phone" value="<?php if (isset($_POST['message_phone'])) { echo esc_attr( $_POST['message_phone']); } ?>">
                      <span class="highlight"></span>
                      <span class="bar"></span>
                      <label for="message_phone">Phone</label>
                  </div><!-- end div group form-group -->
                  <div class="group form-group">
                      <div class="text-group">
                          <textarea class="form-control" type="text" name="message_text" rows="4"><?php if (isset($_POST['message_text'])) { echo esc_textarea($_POST['message_text']); } ?></textarea>
                          <label for="message_text" class="input-label">Message</label>
                          <i class="bar"></i>
                      </div><!-- end div text-group -->
                  </div><!-- end div group form-group -->
                  <div class="g-recaptcha" data-sitekey="6Ld61NkUAAAAAJJ60gH6Ku38xJwj8nzKWbYiaecs"></div>
                  <input type="hidden" name="submitted" value="custom_action">
                  <?php wp_nonce_field( 'custom_action_nonce', 'gymclub_nonce_field' ); ?>
                  <button class="btn btn-primary" id="submit" type="submit" id="gymclub-submit" name="submit">Send</button>
            </form><!-- end form -->
      </div><!--end respond -->
   </div><!-- end div -->
 </div><!-- end div contact -->
</div><!-- end container -->