:root {
    --positive: #fff;
    --negative: #212121;
}

@media screen and (prefers-color-scheme: dark) {
    :root {
        --positive: #000;
        --negative: #dfdfdf;
    }
}


html {
    display: flex;
    height: 100%;
    width: 100%;
    align-items: center;
    justify-content: center;
    font-size: 62.5%;

}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
    background-color: var(--positive);
    color: var(--negative);

    position: relative;
    height: 100%;
    width: 100%;
    margin: 0;

    display: flex;
    align-items: center;
    justify-content: center;

    font-size: 2rem;
}