:root {
    --nav-hover: #8fd1f2;
    --article-bg: #c6e5f5;
    --background: #edf9ff;
    --button: #1271a1;
}

#body-background {
    background: url("../images/BG_winter.JPG") no-repeat fixed;
}
@media (max-width: 600px) {
    #body-background {
        background: #edf9ff;
    }
}