.temoignages {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.temoignages h2 {
    font-size: 24pt;
    text-align: center;
}

.slider-vd {
    width: 98%;
    display: grid;
    grid-template-columns: auto auto;
    grid-gap: 12px;
    grid-auto-rows: 400px;
    margin: 30px;
}

@media screen and (max-width: 800px) {
    .slider-vd {
        grid-template-columns: auto;
        grid-auto-rows: 300px;
    }
}

.slider-vd iframe {
    width: 100%;
    height: 100%;
}