Right now the product name it's too big for mobile. I would like to reduce it. My Shopify Theme is Taste. Could you please help with this?

Hi, I would like to decrease the size of my product pages. Shopify Taste Theme just Allows me a minimum but I want more.

this one didn´t work, thanks anyway.  

Hi! I would like to reduce the padding between the product image and product title just a bit.