hide qimagery header - grease/tamper monkey script

QImagery.js

// ==UserScript==
// @name         qimagery-hide-banner
// @namespace    http://www.zigiprimo.dev/
// @version      0.1
// @description  Hiding the big banner for a more working space
// @author       Sameer Cooshna
// @match        https://qimagery.information.qld.gov.au/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    const topZero = {top: "0px"};
    const zIndexHigh = {zIndex: "100"};

    let elements = {
        mapContainer: [document.getElementById("mapContainer"), topZero, zIndexHigh],
        mainSidebar: [document.getElementById("main-sidebar"), topZero, zIndexHigh]
    };

    Object.values(elements).forEach(value => {
        let element = value.shift();
        let styles = value.reduce((styles, style) => {
            return {...styles, ...style};
        });

        Object.assign(element.style, styles);
    });
})();