*
{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root
{
    --main-color-bg-dark: #000;
    --main-color-bg-light: #fff;
    --main-color-text: #fff;
}

html, body
{
    display: flex;
    flex-direction: column;
    justify-content: center;
    width: 100%;
    height: 100%;
    background-color: var(--main-color-bg-dark);
}