#comptoir {
    background: linear-gradient(180deg, rgba(33, 51, 51, .6) 0%, rgba(33, 51, 51, .6) 2em, rgba(0, 0, 0, 0) 2em), url(../../themes/chelman/header.ia.jpg) top center no-repeat, url(../design/habillage/tete_fond.jpg) top center repeat-x;
}

@media (max-width: 767.98px) {
    #comptoir {
        background: url(../../themes/chelman/header.ia.jpg) top center no-repeat, url(../design/habillage/tete_fond.jpg) top center repeat-x;
        background-size: cover;
    }
}