If you want to change the font for Product Titles, you can use these CSS codes to Website Tools > Custom CSS.
Replace the monospace with the font that you want. You can see this guide to find how to find exact font family name.
#1. Product Titles on Shop/Category Pages
section.products.collection-content-wrapper .grid-main-meta .grid-title {
font-family: monospace !important;
}
#2. Product Titles on Product Detail Page
h1.ProductItem-details-title {
font-family: monospace !important;
}
#3. Product Titles on Related Products
/* related product titles */
.grid-title {
font-family: monospace !important;
}
#4. Product Titles on Summary Block
a.summary-title-link {
font-family: monospace !important;
}
#5. Product Titles on Quick View Lightbox
div.sqs-product-quick-view-lightbox .ProductItem-details-title {
font-family: monospace;
}
#6. Product Titles on Product Block
div.product-block .productDetails .product-title {
font-family: monospace;
}
#7. Product Titles on Cart Page
a.cart-row-title {
font-family: monospace;
}