How to automate 1420 CSS templates over a weekend?

For those not familiar with Gumroad, it is an online platform creators can use to sell their products. As a creator, you can sign up and create products you want to sell. You can pick from a couple of pre-defined templates to customize your page or just use custom CSS. I know CSS can be daunting to people who have never used it. To be honest, it also doesn’t make sense for someone to learn CSS and…