How to insert a script
In order to have the LookSize Widget working on your website the script has to be added into the footer either on all pages or on the following pages: product page, order, the completion of the order.
This can be done through the admin panel of your site.
WordPress:
In the admin panel: Appearance / Theme Options / General -> Add Script to 'Footer Code' field.
1C Bitrix:
In the admin panel: Settings / Product settings / Sites / Site Templates -> Select the desired template and click edit -> At the bottom of the code before the tag insert the looksize script.
Joomla:
In Admin Panel section: Extension / Module Manager / Create -> module type select HTML code -> select All pages and paste the script
Tilda
In the admin panel: "Site Settings" → "More" → "HTML-code for pasting inside the head"