:root {
    --color-header-background: black;
    --color-header-foreground: grey;
}

body header {
    background-color: black;
    color: white;
}

body header>.nav-parts>ul>li a {
    background: black;
}

body footer {
    background-color: black;
    color: white;
}

body {
    color: black;
}

.estate-page #main-container h3 {
    font-weight: bold;
}