WordPress Comment Template Custom Design

<?php

add_filter('comment_form_default_fields', 'industryall_comment_form');

function industryall_comment_form($industryall_fields)
{

    $industryall_fields['author'] = '<div class="col-sm-4">
                  <div class="form-group">
                    <label for="name-cmt">'.esc_html__('Name', 'industryall').' <span>*</span></label>
                    <input type="text" class="form-control" name="author" id="name-cmt" placeholder="">
                  </div>
                </div>';
    $industryall_fields['email'] =  ' <div class="col-sm-4">
                  <div class="form-group">
                    <label for="email-cmt">'.esc_html__('Email', 'industryall').' <span>*</span></label>
                    <input type="email" class="form-control" name="email" id="email-cmt" placeholder="">
                  </div>
                </div>';

    $industryall_fields['url'] = '<div class="col-sm-4">
                  <div class="form-group">
                    <label for="website">'.esc_html__('Website', 'industryall').'</label>
                    <input type="text" class="form-control" name="url" id="website" placeholder="">
                  </div>
                </div>';



    return $industryall_fields;
}


add_filter('comment_form_defaults', 'industiral_comment_default_form');

function industiral_comment_default_form($default_form)
{

    $default_form['comment_field'] = '<div class="row"><div class="col-sm-12">
                  <div class="form-group comment-message">
                    <label>'.esc_html__('Your Comment', 'industryall').'</label>
                    <textarea class="form-control" name="comment" rows="3" placeholder=""></textarea>
                  </div>
                </div>';

    $default_form['submit_button'] = '</div> <button type="submit" class="btn btn-default">'.esc_html__('Post Comment', 'industryall').'</button>';

    $default_form['comment_notes_before'] = '';
    $default_form['title_reply'] = esc_html__('Leave A Commment', 'industryall');
    $default_form['title_reply_before'] = '<h6 class="comments-heading">';
    $default_form['title_reply_after'] = '</h6>';

    return $default_form;
}