<?php
    $sidebar = apply_filters( 'gimont_theme_sidebar', '' );
    if ($sidebar == 'layout_1c' || $sidebar == ''){
        return;
    }
?>

<?php if(is_active_sidebar('main-sidebar')){ ?>
    <aside id="sidebar" class="sidebar">
        <?php  dynamic_sidebar('main-sidebar'); ?>
    </aside>
<?php } ?>