freqtrade/docs/stylesheets/ft.extra.css

.rst-versions  {
    font-size: .7rem;
    color: white;
}

.rst-versions.rst-badge .rst-current-version {
    font-size: .7rem;
    color: white;
}

.rst-versions .rst-other-versions {
    color: white;
}

header > img.logo {
    display: none;
}

header > span {
    font-size: .7rem;
    color: white;
}