DIY Desktop Site Customisation - Use at own risk

Think I'm using a combination of CSS from different users here and it's made a huge difference, some JS too. I commented out the dark mode CSS as it doesn't seem to work outside of a thread and some sections are still white, so am just using Dark Reader for the time being. Overall the site on desktop is much better to use now.

CSS:

header {
    position: static !important
}
#themeHeader {
    display: none !important;
}
.Frame-content,
.Breadcrumbs {
    margin-top: 0 !important;
    margin-bottom: 0 !important;
}
[class^="vanilla-"][class$="-container-fullGutter-container-fullGutter-container-fullGutter"],
.Breadcrumbs {
    max-width: unset !important;
    padding-left: 15px !important;
    padding-right: 15px !important;
}
.Container {
    max-width: none !important;
    padding-left: 15px !important;
    padding-right: 15px !important;
}
.Content.MainContent {
    width: 100% !important;
    flex-shrink: 0 !important;
}
.Panel-main {
    display: none !important;
}
.forum-threadlist-wrapper {
    margin-top: 0 !important;
}
.PageControls {
    float: unset !important;
    display: unset !important;
    margin: 0 !important;
}
.PageControls-filters,
.PagerBefore,
.NewDiscussion,
.BoxNewDiscussion,
.NumberedPager {
    margin: 0 !important;
    padding-top: 0 !important;
    padding-bottom: 0 !important;
    padding-left: 0 !important;
}
.PageControls-filters {
    width: 100% !important;
}
.InformMessages {
    left: auto !important;
    right: 0 !important;
}


/* threads */
.postbit-message,
.Message.userContent {
    padding: 0px !important;
    margin: 0px !important;
}
.postbit-message {
    padding-left: 10px !important;
    padding-right: 10px !important;
}
.postbit-message ~ br {
    display: none !important;
}
.postbit-userinfo br {
    display: none !important;
}
.postbit-userinfo {
    padding-top: 8px !important;
    height: 100% !important;
}
.ItemComment::after,
.ItemComment::before,
.MessageList::before,
.MessageList::after {
    display: none !important;
}
.MessageList {
    margin-bottom: 0 !important;
}
.embedExternal {
    margin: 0 !important;
    width: 100% !important;
    clear: none !important;
}
.vanilla-d7cut4-collapsableContent-heightContainer {
    height: auto !important;
}
.vanilla-toe1gy-collapsableContent-gradient {
    opacity: 0 !important;
}
.vanilla-1vww8zj-collapsableContent-footer {
    display: none !important;
}
.Reactions {
    padding: 0 !important;
    margin: 0 !important;
    margin-right: 10px !important;
    position: unset !important;
    float: right !important;
}
.postbit-postbody .clearleft {
    clear: both !important;
}
.postbit-header time {
    visibility: hidden !important;
}
.postbit-header time::after {
    content: attr(title) !important;
    visibility: visible !important;
    position: absolute !important;
    left: 25px !important;
}
.bodybox-wrap {
    padding-left: 100px !important;
}
#latest + .Comment .postbit-header {
    font-weight: bold !important;
}


/* forums */
.forum-threadlist-thread-lastpost {
    float: left !important;
}
.forum-threadlist-thread-lastposter {
    float: right !important;
    width: unset !important;
}
.Category {
    float: right !important;
}
.Frame-content .HomepageTitle {
    display: block !important;
}
.ReactButton.PopupWindow {
    display: none !important;
}
/* post number and url */
.post_link_ref,
.post_link_ref a {
    float: right;
    color: #fff;
    font-size: 12px;
}
/* highlight urls */
.Item-Body a {
    text-decoration: underline !important
}
/* dark mode */
/*
.Frame,
.postbit-postdetails,
.postbit-userinfo,
.postbit-postbody {
    background: #2f4050 !important;
    color: #dadcde
}
.Frame a {
    text-decoration: underline
}
#PagerAfter a:not(.LastPage),
#PagerBefore a:not(.LastPage),
h1,
h2,
.userinfo-username-title,
.paragraphMenu1-formattingMenus-button {
    color: #dadcde !important
}
.atMention {
    color: #dadcde !important;
}
button#paragraphMenu1-formattingMenus-button {
    color: #fff;
}
.js-embed.embedResponsive * {
    background: rgb(62 81 117);
    color: #dadcde;
}
article a {
    color: #dadcde !important;
}
.ql-editor {
    background: rgb(62 81 117);
    color: #dadcde !important;
}
[id*="thanks_"] {
    background: #2f4050 !important;
    color: #dadcde !important
}
*/

JS:

$(document).ready(function () {
    $(".ReactLabel").text(function (index, text) {
        if (text === 'Flag' || text === 'Quote' || text === 'Like') return '';
    });
});
$(".ReactButton-Like .Count").each(function (index) {
    postid = $(this).closest("li").attr("id")
    post_id = postid.split("_")
    post_id = post_id[1]
    $("<div id='thanks_" + post_id + "' style='margin-left: 246px !important;background:#fff;padding:10px;color:#c12525'>Thanks by: </div>").insertAfter($(this).closest(".postbit-wrapper"));
    $.ajax({
        url: "https://boards.ie/reactions/users/Comment/" + post_id + "/like?DeliveryType=VIEW",
        method: "GET",
        custom: post_id
    })
        .done(function (data, textStatus, jqXHR) {
            var postID = this.custom;
            $(data).find('li a').each(function (index) {
                if ($(this).attr("title") != undefined) {
                    $('#thanks_' + postID).append($(this).attr("title") + ", ");
                }
            })
        });
});
$(".ItemComment").each(function (index) {
    post_id = $(this).attr("id").split("_")
    $("<div class='post_link_ref'><a href='https://boards.ie/discussion/comment/" + post_id[1] + "#" + $(this).attr("id") + "'>" + post_id[1] + "</a></div>").appendTo($(this).find(".postbit-header"))
});
$(".forum-threadlist-table tr").each(function (index) {
    unread = $(this).find("strong.HasNew")
    if (unread.length < 1) {
        $(this).find(".threadbit-threadlink").removeClass("unread")
    }
});