body.high-contrast {
    background-color: black;
    color: yellow;
    font-size: 1.25em;
}

body.high-contrast a {
    color: cyan;
}

body.high-contrast img {
    filter: invert(1);
}

body.high-contrast h2 {
    color: lime;
    font-size: 1.75em;
    font-weight: bold;
    text-decoration: underline;
}