jitsi-meet/css/filmstrip/_small_video.scss

.filmstrip__videos .videocontainer {
    display: inline-block;
    position: relative;
    background-size: contain;
    border: 2px solid transparent;
    border-radius: $borderRadius;
    margin: 0 2px;

    &:hover {
        cursor: hand;
    }

    & > video {
        cursor: hand;
        border-radius: $borderRadius;
        object-fit: cover;
        overflow: hidden;
    }

    .presence-label {
        position: absolute;
        z-index: $zindex3;
    }
}