custom script

add_action('wp_footer',function(){
    ?>
    <script>
        (function(){
            document.querySelectorAll('.jeg_postblock_2.jeg_col_3o3,.jeg_postblock_8.jeg_col_3o3').forEach(function(value){
                value.classList.remove('jeg_col_3o3');
                value.classList.add('jeg_col_2o3');
            })
        })();
    </script>
    <?php
});