:root>* {
    --md-primary-fg-color: #2c3e50;
    --md-typeset-a-color: #3498db;
}

a.md-nav__link--active,
a.md-nav__link--active:focus,
a.md-nav__link--active:hover {
    text-decoration: underline;
    text-decoration-thickness: 2px;
    text-underline-offset: 3px;
}