Figured I’d cobble together a quick-n-dirty greasemonkey/tapermonkey script to slighly modify the CSS to feel a little more like old.reddit with RES. Still not quite as compact as I’d like, but it’s getting there.

This is primarily for HD widescreen/desktop.

Please suggest/make edits as you like.

// ==UserScript==
// @name         Lemmy to Old.Reddit Re-format
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  Reformat widescreen desktop to look more like Reddit
// @author       mershed_perderders
// @match        https://sh.itjust.works/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=itjust.works
// @grant        none
// ==/UserScript==

//special thanks to StackOverflow - the one true source of all code, amen.
function GM_addStyle(css) {
  const style = document.getElementById("GM_addStyleBy8626") || (function() {
    const style = document.createElement('style');
    style.type = 'text/css';
    style.id = "GM_addStyleBy8626";
    document.head.appendChild(style);
    return style;
  })();
  const sheet = style.sheet;
  sheet.insertRule(css, (sheet.rules || sheet.cssRules || []).length);
}

//specific Lemmy-to-Old.Reddit style reformats
GM_addStyle(".container-fluid, .container-lg, .container-md, .container-sm, .container-xl {   margin-right: unset !important; margin-left: unset !important;}");
GM_addStyle(".container, .container-lg, .container-md, .container-sm, .container-xl { max-width: 100% !important; }");
GM_addStyle(".col-md-4 { flex: 0 0 20% !important; max-width: 20%; }");
GM_addStyle(".col-md-8 { flex: 0 0 80% !important; max-width: 80%; }");
GM_addStyle(".col-sm-2 { flex: 0 0 9% !important; max-width: 10%; }");
GM_addStyle(".col-1 { flex: 0 0 4% !important; max-width: 5%; }");
GM_addStyle(".mb-2, .my-2 { margin-bottom: 0.3rem !important; }");
GM_addStyle(".thumbnail {   min-height: 100px; max-height: 125px; }");
GM_addStyle(".mb-3, .my-3 { margin-bottom: .2rem !important; }");
GM_addStyle(".mt-3, .my-3 { margin-top: .2rem !important; }");
GM_addStyle(".vote-bar { margin-top: 15px !important; }");
GM_addStyle(".comments {  margin-left: 20px; max-width: 75%;}");

Screenshot