.copyright:before {
    content: "";
    display: block;
    width: 100%;
    height: 50px;
    background-image: url("EN_Funded/EN_FundedbytheEU_RGB_POS.png");
    background-size: contain;
    background-repeat: no-repeat;
    background-position: left;
}

@media (prefers-color-scheme: dark) {
    .copyright:before {
        background-image: url("EN_Funded/EN_FundedbytheEU_RGB_NEG.png");
    }
}

body[data-theme="dark"] {
    .copyright:before {
        background-image: url("EN_Funded/EN_FundedbytheEU_RGB_NEG.png");
    }
}