gd.css

@import "https://highlightjs.org/static/demo/styles/nord.css";

.lines-num {
    background: #3b4252 !important;
}

.lines-code .linenums {
    background: #2e3440 !important;
}

.lines-code .linenums li.active {
    background: #434c5e !important;
}

.repository .diff-file-box .code-diff-unified tbody tr.del-code td {
    background: #66292f !important;
}

.repository .diff-file-box .code-diff-unified tbody tr.add-code td {
    background: #50693b !important;
}