is there a way to make the page button red when a user is active ob that page?

Without a link to the page to see what you’re talking about I don’t think anyone can help.

https://www.tsigaradiko.com/product-category/Atomizers/ Go at the bottom of the page and select page 2. I want it to be red when a user click on page 2. Like a.active{background-color:red;} Something like that

Style the span element:

.woocommerce nav.woocommerce-pagination ul li span