Use Stylus, for example I do not like StackOverflow left menu and sticky menu:

    .left-sidebar { display: none }
    #content { width: 100% /* calc(100% - 164px) */ }
 
    .top-bar { display: none }
    body { padding-top: inherit /* 50px */ }

its no script experience cluttered by warning and GDPR consent:

    #noscript-warning { display: none }
    body { margin-top: inherit /* 1.9em */ }

    #js-gdpr-consent-banner { display: none }

Users can extend, overwrite and even discard authors styles, but they have to either understand web layout or use userstyles.org.