#tarteaucitronAlertBig {
    border-radius: 5px !important;  
    position: relative;
    text-align: center;
    padding-top: 95px !important; /* espace pour le logo */
}
#tarteaucitronAlertBig::before {
    content: " " !important;
    position: absolute;
    top: 25px;
    left: 50%;
    transform: translateX(-50%);
    width: 220px;
    height: 50px;
    background: url('/templates/responsive/themes/1/svg/logo-protoumat.svg') no-repeat center center;
    background-size: contain;
}