.block-video-right{
    float: right;
    margin-left: 20px;
    font: italic 12px Georgia, serif;
}
.block-video-left{
    float: left;
    margin-left: 20px;
    font: italic 12px Georgia, serif;
}
.block-video-center{
    display: grid;
    margin: auto;
    overflow: hidden;
    font: italic 12px Georgia, serif;
}
.block-video-small {
    width: 480px;
    height: auto;
}
.block-video-medium {
    width: 640px;
    height: auto;
    max-width: 100%;
}
.block-video-large {
    width: 1280px;
    height: auto;
    max-width: 100%;
}