{background: !moreimportantthanimportant} (style vs !important)

Tитан

How to make background transparent if it's have "background:#fefefe !important" on site? Is it possible?
I tried some manipulations with width, height and padding but something i do wrong

stonecrusher

You can't fight an inline !important with external CSS.

I suggest writing your style as usual but remove the inline styles with some Javascript (apply with an extension like Tampermonkey).
For example:

// ==UserScript==
// @name         Remove inline important background
// @namespace    stonecrusher
// @version      0.1
// @description  Removes inline styles that are specified in the script
// @author       stonecrusher
// @match        https://www.example.com/*
// @grant        none
// ==/UserScript==
/* jshint esversion: 6 */

(function() {
    'use strict';

    var nodeList = document.querySelectorAll("#your > .selectors, #here ~ .separated > .by.commas, .have.fun"),i;
    for (i = 0; i < nodeList.length; ++i) {
        nodeList[i].style.removeProperty("background");
    }

})();

Tитан

thanks, how can I apply this code only for one sitE?

calico

For fun you can always test out the Myf maneuver.

https://forum.userstyles.org/discussion/comment/97780/#Comment_97780

krystian3w

You can fight if this !important is *.css on this page or in <style> - must use same XPath / CSS selectors.

stonecrusher

thanks, how can I apply this code only for one sitE?

It will only be active for sites specified in the @match statement.

Here is some more information, but probably unnecessary. Just paste your desired URL / Domain after // @match and you'll be fine.
* resembles wildcard.

https://developer.chrome.com/extensions/match_patterns