Why is wp_kses not keeping style attributes as expected?

Here is my php code:

$allowed_html = array(
     'div' => array(
            'title' => array(),
            'class' => array(),
            'style' => array()
    )
);

$str = '<div title='Click to continue' style='display:table'>This is a button</div>';
wp_kses($str, $allowed_html );

I want to keep the style attribute. $str is just an example.

Thank you, MMK.