Police problem

I ve switched from Yootheme Square to Yootheme Pro due to the evolution of PHP. As you can imagine I was facing a lot of trouble but step by step everything is coming in order. 
When assisting a user via ZOOM I realized that the font police of its cb_component ( when registered) was different on its computer from the one I've got on my computer. It looks like as the main font family police wasn't recognized from CB/ I think that my computer get it and let it work properly but is there something to ajust and where ? 

[REMOVED]

Then you should probably see the difference ? 

Thank for your support 

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I've no idea what you're asking regarding the font. You mean the font looks different on their computer compared to yours? We use the following font set by Bootstrap.

It's set on the CSS selector cb_template so you can override it to whatever you like. Looks like you're already doing that in your CB template CSS overrides with the below (note your cb_template against the body element selector is not necessary).

I can't help you in regards to any font styles your Joomla template applies. If you want CB to not set this at all you can use the below.