/* Nascondi loghi originali */
.navbar-brand .logo a img {
    opacity: 0 !important;
    width: 0 !important;
    height: 0 !important;
}

/* Mostra nuovo logo con pseudo-elemento */
.navbar-brand .logo a::before {
    content: '';
    display: block;
    width: 250px;
    height: 50px;
    background-image: url('https://newsletter.flowassessment.it/uploads/flow-assessment.png');
    background-size: contain;
    background-repeat: no-repeat;
    background-position: left center;
}