.mav__video {
    background-color: var(--color-gris-fond);
    padding: 2rem 1.25rem;
    text-align: center;
    margin: 2rem auto;
}
.mav__video__plaquette iframe {
    width: 60%;
    height: 500px;
    object-fit: contain;
}
@media (max-width: 900px){
    .mav__video__plaquette iframe {
        width: 100%;
        height: 350px;
    }
}