Reply To: how to change site font settings

Hello,

Thank you so much for contacting our support center.

Try to add the following code snippet to the Custom CSS area in Theme Settings to change the product and browse categories font size

body .product-image-summary .entry-title {
    font-size: 16px;
}

body .header-categories-nav .menu-opener {
	font-size: 12px;
}

As for the banner, you are able to edit it with WPBakery page builder and change titles size there.

Kind Regards
XTemos Studio