Applying the CSS "@supports (display: grid) { .wrapper > tbody, .wrapper > tbody > tr { display: contents; } }" with wild abandon in GeoCities HTML table-based layout templates optimized for Internet Explorer 3 and/or Netscape Navigator 3 to make them pleasant on sub-VGA pocket screens while still remaining optimized for those early browsers and every desktop browser since: from IE3 to Edge 125, and from NN3 to Firefox 128.
I'm reading that the CSS "display: contents;" on TR and (implicit) TBODY elements wrecks accessibility of tables as tabular data, rendering their TH and TD cells as ordinary content with no tabular relationship instead, but since these are tables "misapplied" for layout only and never meant to be tabular data themselves (one of the only ways to control page layout in pre-CSS and CSS1 days), that seems like a perk in this specific case.
Mozilla Developer Network, "Realizing common layouts using grids": https://developer.mozilla.org/en-US/docs/Web/CSS/Guides/Grid_layout/Common_grid_layouts
Reading guides like that while lamenting the shortcomings of vintage Web browsing, even via RetroZilla in a Windows 98SE VM, does strange things to a girl, y'know?
Related: CSS grids are 3 years older than Chromium-based Microsoft Edge and only 2 years younger than EdgeHTML (Trident)-based Microsoft Edge Legacy.
IE4 is my main target and Firefox current is my ultimate target, but Dillo, Links, RetroZilla, and SeaMonkey (last for Win98 and current, both) are proving at least as useful as Firefox's Responsive Design Mode in testing and debugging.