Piss off the tab rail in the new slack browser (doesnt work in FF due to CSP)

slack-ui.js

// ==UserScript==
// @name        Piss off the tab rail bar
// @namespace   Violentmonkey Scripts
// @match       https://app.slack.com/client/*
// @grant       GM_addStyle
// @version     1.0
// @author      spacepants
// @description 07/09/2023, 10:24:39
// ==/UserScript==

GM_addStyle( `

 .p-ia4_client {
    display: grid;
    grid-template-areas:
        "p-ia4_top_nav p-ia4_top_nav"
        "p-tab-rail p-client-workspace";
    grid-template-columns: 0px auto;
    grid-template-rows: 4px auto;
    max-height: 100vh;
    position: relative;
    width: 100vw;
}

.p-tab-rail {
  display:none;
}

.p-tab_rail {
  display:none;
}

.p-control_strip {
  display:none;
}

`);