Quantity display style sets to 0 width

-- HikaShop version -- : 3.4.0
-- Joomla version -- : 3.8.8
-- PHP version -- : 7.1.18
-- Browser(s) name and version -- : All

Hi,

Quantities are not displaying correctly when you choose a characteristics. The style sets to 0 (zero) width.

I cannot see a way to override the CSS

As you can see the style is being set as follows:

<div class="chzn-container chzn-container-single" style="width: 0px;" title="" id="hikashop_product_quantity_field_6_select_chzn"><a class="chzn-single"><span>1</span><div><b></b></div></a><div class="chzn-drop"><div class="chzn-search"><input autocomplete="off" type="text"></div><ul class="chzn-results"></ul></div></div>

Please can you advise how and where to overwrite this style.

Many thanks


Richard