alt Hacker NewsI nowadays build sites (personal websites and projects) that are much more responsive than most things I see online or on a job, just using modern CSS, a little thinking about how I structure my stylesheets, trying to use semantic HTML and not making a div soup. It works pretty well, if used correctly and given the due attention.
Responsiveness has been fine for a while. Not surprising with the smartphone revolution being nearly 2 decades old by now.
GP asked about reactivity. And that still requires some frameworking, either prebuilt or a lightweight self-written one.