bg
// ==UserScript==
// @name Background
// @namespace http://tampermonkey.net/
// @version 1.0
// @description bg
// @author umaimann
// @match *://*/*
// @grant none
// @license MIT
// ==/UserScript==
(function() {
'use strict';
var existing = document.getElementById('custom-bg');
if(existing){ existing.remove(); }
// 背景用 div 作成
var bg = document.createElement('div');
bg.id = 'custom-bg';
bg.style.position = 'fixed';
bg.style.top = '0';
bg.style.left = '0';
bg.style.width = '100vw';
bg.style.height = '100vh';
bg.style.zIndex = '-1';
bg.style.backgroundImage = "url('https://videotourl.com/images/1776643221632-ca2085be-e1f7-46d2-8a42-1470408bab73.jpeg')";
bg.style.backgroundSize = 'cover';
bg.style.backgroundRepeat = 'no-repeat';
bg.style.backgroundPosition = 'center center';
document.body.appendChild(bg);
})();