You have to makde a specific override like explain in our developper documentation (For the quantity input)
www.hikashop.com/en/support/documentatio...tation.html#override
And, in the quantity override, you have to override put function:
function hikashop_popup_render() {
return '<div style="display:none;">'.
'<a rel="{handler: \'iframe\',size: {x: 480, y: 140}}" id="hikashop_notice_box_trigger_link" href="'.hikashop_completeLink('checkout&task=notice'.$url_itemid,true).'"></a>'.
'<a rel="{handler: \'iframe\',size: {x: 480, y: 140}}" id="hikashop_notice_wishlist_box_trigger_link" href="'.hikashop_completeLink('checkout&task=notice&cart_type=wishlist'.$url_itemid,true).'"></a>'.
'</div>';
}
You can change the values "x" and "y" in order to change the size of the popup.
But, depending to your template, it is possible that, growing the size of the popup will not remove the scrollbar.
It could be a CSS problem with your template.
Regards,