The appearance of my filter

Hello.

The appearance of my filter is ugly. I love the look of this spectacle here:
https://demo-filtereverything-pro.translate.goog/product-category/clothing/women/color-black/c-kind-dress/?max_price=250&_x_tr_sl=en&_x_tr_tl=ru&_x_tr_hl=ru&_x_tr_pto=sc

But I have a plugin free version. Please tell me the CSS code for my site, given the free version.

Are there any options or how to do it? I want CSS code to design the filter like yours.

To your health

The page I need help with: [log in to see the link]