Problems with description font sizes in Dawn Theme Version 13.0.0

[RosyRetro]

I'd be so grateful for any advice, I have the latest version of the Dawn theme installed but notice many of my descriptions have either teeny tiny font size, or a mix of different sizes. Ideally, it all needs to be a decent readable size in San-Serif.  I have zero coding knowledge so any help or advice would be gratefully received! An example is here https://rosyretro.co.uk/products/liberty-fabric-progress-keeper-for-knitting-and-crochet 

[BSS-Commerce]

Hi @RosyRetro ,

You can add CSS to the theme by following these steps:

Find the base.css file

Add this code at the end of the file:

.product__description p span {
    font-size: 1.6rem !important;
}

Hope it works @RosyRetro