.header .header__lang-flag--ua {
    background: -webkit-gradient(linear, left top, left bottom,
    from(#0057b7),
    color-stop(50%, #0057b7),
    color-stop(50%, #ffd700),
    to(#ffd700)
    );
    background: -o-linear-gradient(top,
    #0057b7 0,
    #0057b7 50%,
    #ffd700 50%,
    #ffd700 100%
    );
    background: linear-gradient(180deg,
    #0057b7 0,
    #0057b7 50%,
    #ffd700 50%,
    #ffd700 100%
    );
}

.header .header__lang-flag--en {
    background: /* красный крест */ linear-gradient(90deg, transparent 47%, #c8102e 47%, #c8102e 53%, transparent 53%),
    linear-gradient(0deg, transparent 47%, #c8102e 47%, #c8102e 53%, transparent 53%),
        /* белый крест */ linear-gradient(90deg, transparent 40%, #ffffff 40%, #ffffff 60%, transparent 60%),
    linear-gradient(0deg, transparent 40%, #ffffff 40%, #ffffff 60%, transparent 60%),
        /* красные диагонали */ linear-gradient(45deg, transparent 49%, #c8102e 49%, #c8102e 51%, transparent 51%),
    linear-gradient(-45deg, transparent 49%, #c8102e 49%, #c8102e 51%, transparent 51%),
        /* белые диагонали */ linear-gradient(45deg, transparent 44%, #ffffff 44%, #ffffff 56%, transparent 56%),
    linear-gradient(-45deg, transparent 44%, #ffffff 44%, #ffffff 56%, transparent 56%),
        /* синий фон */ #012169;
}

.header .header__lang-flag--de {
    background: -webkit-gradient(linear, left top, left bottom,
    from(#000000),
    color-stop(33.33%, #000000),
    color-stop(33.33%, #dd0000),
    color-stop(66.66%, #dd0000),
    color-stop(66.66%, #ffce00),
    to(#ffce00)
    );
    background: -o-linear-gradient(top,
    #000000 0,
    #000000 33.33%,
    #dd0000 33.33%,
    #dd0000 66.66%,
    #ffce00 66.66%,
    #ffce00 100%
    );
    background: linear-gradient(180deg,
    #000000 0,
    #000000 33.33%,
    #dd0000 33.33%,
    #dd0000 66.66%,
    #ffce00 66.66%,
    #ffce00 100%
    );
}

.header .header__lang-flag--it {
    background: -webkit-gradient(linear, left top, right top,
    from(#009246),
    color-stop(33.33%, #009246),
    color-stop(33.33%, #ffffff),
    color-stop(66.66%, #ffffff),
    color-stop(66.66%, #ce2b37),
    to(#ce2b37)
    );
    background: -o-linear-gradient(left,
    #009246 0,
    #009246 33.33%,
    #ffffff 33.33%,
    #ffffff 66.66%,
    #ce2b37 66.66%,
    #ce2b37 100%
    );
    background: linear-gradient(90deg,
    #009246 0,
    #009246 33.33%,
    #ffffff 33.33%,
    #ffffff 66.66%,
    #ce2b37 66.66%,
    #ce2b37 100%
    );
}

.header .header__lang-flag--fr {
    background: -webkit-gradient(linear, left top, right top,
    from(#0055a4),
    color-stop(33.33%, #0055a4),
    color-stop(33.33%, #ffffff),
    color-stop(66.66%, #ffffff),
    color-stop(66.66%, #ef4135),
    to(#ef4135)
    );
    background: -o-linear-gradient(left,
    #0055a4 0,
    #0055a4 33.33%,
    #ffffff 33.33%,
    #ffffff 66.66%,
    #ef4135 66.66%,
    #ef4135 100%
    );
    background: linear-gradient(90deg,
    #0055a4 0,
    #0055a4 33.33%,
    #ffffff 33.33%,
    #ffffff 66.66%,
    #ef4135 66.66%,
    #ef4135 100%
    );
}