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ニコニコ_マイページスタイル_1:1

NicoNico_mypageStyle_1:1

// ==UserScript==
// @name         ニコニコ_マイページスタイル_1:1
// @namespace    https://twitter.com/TONoran0414
// @version      1.0
// @description  NicoNico_mypageStyle_1:1
// @author       You
// @match        https://www.nicovideo.jp/my*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';
    let style = document.createElement("style")
    let styletext = [
        "body{min-width:1260px;overflow-x:hidden;}",
        ".PageTopButtonContainer-pageTopButton{bottom:25px;right:25px;}",
        ".RightSideContainer{margin-left:325px;}"
    ]
    styletext = styletext.join("\n")
    style.innerHTML = styletext;
    document.body.appendChild(style)
    // Your code here...
})();