Github fixed logo with stylebot.

github.css

#partial-discussion-header > div.gh-header-shadow.box-shadow {
    height: 45px;
}

#partial-discussion-header > div.js-sticky.js-sticky-offset-scroll.top-0.gh-header-sticky.is-stuck > div > div {
    margin-top: 2px !important;
}

.gh-header .gh-header-sticky.is-stuck+.gh-header-shadow {
    z-index: 18;
}

.js-selected-navigation-item.Header-link {
    padding-bottom: 12px !important;
    padding-top: 12px !important;
}

div.Header-item.Header-item--full > div {
    padding-left: 40px;
}

header.Header {
    padding: 8px 32px !important;
}

header.Header > div:nth-child(1) {
    left: 32px;
    position: fixed;
    top: 10px;
    z-index: 19;
}

body > div.position-relative.js-header-wrapper > header > div:nth-child(1) > a > svg {
    background-color: #24292e;
    border: 1px solid #24292e;
    border-radius: 50%;
    box-sizing: border-box;
}

.Box-body,
.blob-code,
.blob-code-inner {
    font-family: CamingoCode;
    font-size: 14px;
}

.cm-s-github-light.CodeMirror {
    height: 500px !important;
}

nav.js

// ==UserScript==
// @name         github nav trending
// @namespace    http://github.com/
// @version      1.0.2
// @description  Not market, trending please.
// @author       Sy
// @match        https://github.com/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    function sanitize () {
        const mkt = document.querySelector('.Header-item--full nav div a');
        if (!mkt) throw Error('Target element not found!');

        mkt.textContent = 'Trending';
        mkt.href = '/trending';
    }

    try {sanitize();} catch (e) {}
})();