Please don't use the Stylish browser extension and userstyles.org. They're both owned by an advertising company, paywall basic features, and also this https://robertheaton.com/2018/07/02/stylish-browser-extension-steals-your-internet-history/

Use the "Stylus" browser extension instead. It's a fork of Stylish before they added the invasive tracking and paywalls. https://userstyles.world/ is also a community-ran alternative to userstyles.org, use that instead for sharing your styles.