source: travel-booking-agency/0.3/single.php

<?php
/**
 * The Template for displaying all single pages.
 *
 * @package Travel Booking Agency
 */
get_header(); ?>

<?php do_action( 'travel_booking_agency_single_post_header' ); ?>

<main id="main" role="main" class="middle-align">
        <div class="container space-top">
                <?php
        $travel_booking_agency_single_post_sidebar = get_theme_mod( 'travel_booking_agency_single_post_sidebar','Right Sidebar');
        if($travel_booking_agency_single_post_sidebar == 'Left Sidebar'){ ?>
            <div class="row">
                                <div class="col-lg-4 col-md-4"><?php get_sidebar();?></div>
                                <div class="col-lg-8 col-md-8" class="content-ma">
                                        <?php if (get_theme_mod('travel_booking_agency_single_post_breadcrumb',true) != ''){ ?>
                                    <div class="bradcrumbs">
                                        <?php travel_booking_agency_the_breadcrumb(); ?>
                                    </div>
                                <?php }?>
                                        <?php while ( have_posts() ) : the_post(); 
                                                get_template_part( 'template-parts/single-post');
                                        endwhile; // end of the loop. ?>
                        </div>
                </div>
            <?php }else if($travel_booking_agency_single_post_sidebar == 'Right Sidebar'){ ?>
                <div class="row">
                        <div class="col-lg-8 col-md-8" class="content-ma">
                                <?php if (get_theme_mod('travel_booking_agency_single_post_breadcrumb',true) != ''){ ?>
                                    <div class="bradcrumbs">
                                        <?php travel_booking_agency_the_breadcrumb(); ?>
                                    </div>
                                <?php }?>
                                        <?php while ( have_posts() ) : the_post(); 
                                                get_template_part( 'template-parts/single-post');
                                        endwhile; // end of the loop. ?>
                        </div>
                                <div class="col-lg-4 col-md-4"><?php get_sidebar();?></div>
                        </div>
                <?php }else if($travel_booking_agency_single_post_sidebar == 'One Column'){ ?>
                        <div class="content-ma">
                                <?php if (get_theme_mod('travel_booking_agency_single_post_breadcrumb',true) != ''){ ?>
                                    <div class="bradcrumbs">
                                        <?php travel_booking_agency_the_breadcrumb(); ?>
                                    </div>
                            <?php }?>
                                <?php while ( have_posts() ) : the_post(); 
                                        get_template_part( 'template-parts/single-post');
                                endwhile; // end of the loop. ?>
                </div>
            <?php }else {?>
                        <div class="row">
                        <div class="col-lg-8 col-md-8" class="content-ma">
                                <?php if (get_theme_mod('travel_booking_agency_single_post_breadcrumb',true) != ''){ ?>
                                    <div class="bradcrumbs">
                                        <?php travel_booking_agency_the_breadcrumb(); ?>
                                    </div>
                                <?php }?>
                                        <?php while ( have_posts() ) : the_post(); 
                                                get_template_part( 'template-parts/single-post');
                                        endwhile; // end of the loop. ?>
                        </div>
                                <div class="col-lg-4 col-md-4"><?php get_sidebar();?></div>
                        </div>
        <?php } ?>
        <div class="clearfix"></div>
    </div>
</main>

<?php do_action( 'travel_booking_agency_single_post_footer' ); ?>

<?php get_footer(); ?>