.sponsor img {
    width: 100%;
}

.iframe {
    margin: 2em;
}

.sponsor {
    padding: 35px;
    border-radius: 16px;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.21);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ============================================================
   DESKTOP (min-width: 780px)
   ============================================================ */

@media screen and (min-width: 780px) {
    #NosSponsors {
        display: grid;
        grid-template-columns: repeat(auto-fit, 350px);
        grid-gap: 20px;
    }

    #NosSponsors h3 {
        grid-column: 1 / -1;
    }

    .sponsor {
        background: rgba(255, 255, 255, 0.4);
        border-radius: 30px;
    }
}

/* ============================================================
   MOBILE (max-width: 780px)
   ============================================================ */

@media screen and (max-width: 780px) {
    #NosSponsors {
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    #NosSponsors h3 {
        align-self: baseline;
    }

    .sponsor {
        width: 45vw;
        height: 45vw;
        background: rgba(255, 255, 255, 0.5);
        border-radius: 16px;
    }
}