body.high-contrast {
    background: #000 !important;
    color: #fff !important;
}

body.high-contrast a {
    color: #ffff00 !important;
}

body.high-contrast .main-header,
body.high-contrast .main-footer,
body.high-contrast .card,
body.high-contrast .dropdown-menu,
body.high-contrast .navbar {
    background: #000 !important;
    color: #fff !important;
}

body.high-contrast img {
    opacity: 0.9;
}

body.high-contrast input,
body.high-contrast textarea,
body.high-contrast select {
    background: #222 !important;
    color: #fff !important;
    border: 1px solid #fff !important;
}

body.high-contrast button {
    background: #fff !important;
    color: #000 !important;
}