a.nav-link.active {
    font-weight: bold;
}
.bg-gruen {
    background-color: #5c743d;
}
.bg-gelb {
    background-color: #ffffb9;
}
.bg-head {
    background-color: #ffffb9;
}
#content h1, #content h2, #content h3 {
    color: #5c743d;
}
#content a {
    color: #5c743d;
}