Customized Vivaldi web-panel for DeepL Translator

deepl.user.js

// ==Description==
// Due to Chromium security updates, some Chrome extensions are currently not working in Vivaldi Sidebar.
// It also affects this script.
// It is a customization for using DeepL Translator as web-panel in Vivaldi Browser.
// It can be added like a chrome extension when you have activated developer mode for chrome extensions.
// The code can be modified to match your resolution or theme colors.
// Copy the code below from line 9 to end, save it to any directory as "deepl.user.js" and add the file by dragging it into 
// vivaldi://extensions/
// ==/Description==

// ==UserScript==
// @name         deepl
// @version      0.2
// @description  deepl force 100%
// @author       ml
// @match        https://www.deepl.com/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    var box=document.querySelector('.lmt__sides_wrapper');
box.style.display = "block";

    Array.from(
        document.querySelectorAll('.lmt__side_container')
        ).forEach(col => (col.style.width = "100%"));
})();

    Array.from(
        document.querySelectorAll('.eSEOtericText, .dl_ad_pro_container, #lmt_quotes_article, .lmt__glossary_ad, .dl_footer, .dl_footerV2_container, .dl_body--redesign, .showSEOText, #dl_career_container')
        ).forEach(el => (el.style.display = "none"));   


document.body.setAttribute('style', 'min-width: 430px; overflow-x: hidden; background-color: #C0DADC !important');

document.querySelectorAll('.lmt--web .lmt__textarea_container').forEach(el => el.setAttribute('style', 'min-height: 200px; margin-bottom: 10px'));

OK, I deleted the repository and the permalink is here.

Again, no, the permalink is the one from my first comment.
The link you just shared, on the other hand, contains a commit ID, so it will always point to that commit, and never to newer ones.

OK, as you can see, I don't know anything about this. Just hearing what's wrong doesn't help me. Better would be a good tutorial on how to create a real permalink. I haven't been able to find such a guide anywhere.
You don't provide one either, as far as I can see. So make do with what I've provided here or give constructive hints that I can use.
Otherwise, I've updated my post in the forum each time. There you can also find the current script.

Better would be a good tutorial on how to create a real permalink.

Ok, here.

You don't provide one either, as far as I can see

Yes, the link from my first comment matches exactly that tutorial.

Update:
Added "#dl_career_container" for display: "none"

Due to Chromium security updates, some Chrome extensions are currently not working in Vivaldi Sidebar.
It also affects this script. It only works in tab at the moment.