Change Font Size on Amazon Blocks with Code

I've tried at my limited CSS to change the font on this Page using the Advanced tab. Nothing is affecting it. I've looked at the page source to find something but no luck.

I would like to change the size of the item titles:

https://www.jimfelder.com/photographersgear

Try placing the below into your websites global CSS. I wasn't sure if you wanted to change the title or price font size so I've included both.

.product-block .productDetails .product-title, .product-block .productDetails .product-price {
    font-size: 20px!important;}

Thank you so much ThompsonWebDesign for the quick response and perfect answer!