How to make the layout in Opencart adapt correctly?

Question

opencart

There is such a design:

<?php if ($column_left && $column_right) { ?>
<?php $class = 'col-sm-6'; ?>
<?php } elseif ($column_left || $column_right) { ?>
<?php $class = 'col-sm-9'; ?>
<?php } else { ?>
<?php $class = 'col-sm-12'; ?>
<?php } ?>

It's not clear why it doesn't work. Always sets the block width to col-sm-9
Can someone tell me where to dig? I will be very grateful

Answer 1

try changing this line
<?php } elseif ($column_left || $column_right) { ?>
like this
<?php } elseif (($column_left and !$column_right) || ($column_right and !$column_left)) { ?>