CSDN阅读美化（新、旧版兼容）

自动阅读全文；去广告；布局及格式优化；优化内容推荐展示样式；图片居中；删除空段落；去除首行缩进；支持MathJax。（修改自新版CSDN阅读体验提升）
当前为 2018-03-07 提交的版本，查看最新版本。
换行
// ==UserScript==
// @name         CSDN阅读美化（新、旧版兼容）
// @namespace    http://www.csdn.net/
// @icon         https://favicon.yandex.net/favicon/csdn.net
// @version      0.0.6-20180307
// @description  自动阅读全文；去广告；布局及格式优化；优化内容推荐展示样式；图片居中；删除空段落；去除首行缩进；支持MathJax。（修改自新版CSDN阅读体验提升）
// @author       zhuzhuyule
// @license      GPL version 3
// @match        http://blog.csdn.net/*
// @grant        none
// @run-at       document-body
// ==/UserScript==
(function() {
    'use strict';
    //初始化一个 document.ready 事件
    (function () {
        var ie = !!(window.attachEvent && !window.opera);
        var wk = /webkit\/(\d+)/i.test(navigator.userAgent) && (RegExp.$1 < 525);
        var fn = [];
        var run = function () {
            for (var i = 0; i < fn.length; i++) fn[i]();
        };
        var d = document;
        d.ready = function (f) {
            if (!ie && !wk && d.addEventListener)
                return d.addEventListener('DOMContentLoaded', f, false);
            if (fn.push(f) > 1) return;
            if (ie)
                (function () {
                    try {
                        d.documentElement.doScroll('left');
                        run();
                    }
                    catch (err) {
                        setTimeout(arguments.callee,0);
                    }
                })();
            else if (wk)
                var t = setInterval(function () {
                    if (/^(loaded|complete)$/.test(d.readyState)){
                        clearInterval(t);
                        run();
                    }
                }, 0);
        };
    })();
    function addStyle() {
        var s='';
        //公共部分
        s+='*{transition: opacity 1s, width 1s;}';
        s+='h1 { "text-align": "center"; }';
        s+='.article_content p { margin:1em 0; "line-height": "1.75em";"color":"#2F2F2F"}';
        s+='.recommend_list { height: 90px; overflow-y: hidden; opacity:.2; }';
        s+='.recommend_list.show { height:auto;  overflow-y: visible;opacity:.2; }';
        s+='.recommend_list:hover { opacity:1; }';
        s+='.pulllog-box { display:none !important; }';
        s+='article::after{content:"— The End —";color:#e0e0e0;text-align:center;width:100%;line-height:60px;margin-top:-40px;display:block;font-family:Monotype Corsiva,Blackadder ITC,Brush Script MT,Bradley Hand ITC,Bell MT;font-size:1.6em;padding-bottom:.6em;}';

        //旧版本
        s+='#homepageArticles { display: none !important; }';
        s+='#nav_show_top_stop { display: none !important; }';
        s+='#layerd { display: none !important; }';
        s+='.QRcodebg1 { display: none !important; }';
        s+='#com-quick-reply,#com-quick-collect,#com-d-top-a { min-width: 30px !important; width: 31px !important;}';
        s+='#com-quick-reply:hover,#com-quick-collect:hover,#com-d-top-a:hover { width: 90px !important;}';

        //新版本
        s+='.fixRight,.extension_other,.fixRight_box,.persion_article { display: none !important;}';
        s+='.article_content,.article_content p,.article_content p span:not([class^=MathJax] span):not([class^=MathJax]):not([id^=MathJax] span):not([id^=MathJax]) {"font-family": "Microsoft YaHei,Consolas";"font-size": "15px" }';
        s+='.article_content p .MathJax { "font-size": "16px"; }';
        s+='.article_content p img{  "display": "block";"margin": "0 auto" }';

        //添加样式到 Head 中
        var head = document.head || document.getElementsByTagName('head')[0];
        if (head) {
            var style = document.createElement("style");
            style.type = "text/css";
            style.appendChild(document.createTextNode(s));
            head.appendChild(style);
        }
    }

    try {
        //修改原来烦人的样式
        addStyle();
        document.ready(function(){
            //自动展开全文
            var btnMore = document.querySelector('.readall_box a.btn.read_more_btn');
            if (btnMore)
                btnMore.click();

            //优化推荐列表显示效果
            var recommendList = document.querySelector('.recommend_list');
            if (recommendList){
                var func = function(){
                    this.classList.add('show');
                    recommendList.removeEventListener('mousemove',func);
                };
                recommendList.addEventListener('mousemove',func);
            }

            //删除空白段落
            var paragraph = document.querySelectorAll('.article_content p');
            paragraph.forEach(function(item){
                if(!item.innerText.trim() && !item.querySelector('img,a') )
                    item.parentElement.removeChild(item);
            });
        });
    } catch (e) {
        console.log(e);
    }
})();