slowtwitch-wp-theme/page.php

<?php get_header() ?>

<div class="container">
    <?php
    if (have_posts()) {
        while (have_posts()) {
            the_post();
            $post_id = get_the_ID();
    ?>
    <div class="column two-thirds">
        <h1 class="article-title"> <?php the_title(); ?> </h1>
    <?php 
        the_content();
        }
    }
    wp_reset_postdata();
        ?>
            </div>
            <div class="column one-third">
                <img class="article-sidebar-ad" src="/wp-content/themes/slowtwitch-wp/assets/images/vertical-ad-mock.jpg" alt="">
                <?php dynamic_sidebar('slowtwitch-front-page'); ?>
            </div>
</div>

<?php get_footer() ?>