iframe.youtube, iframe.rutube {
    display: block;
    border-radius: 4px;
    margin: 8px auto;
    &.left, &.right { margin: 8px }
}

table.timing {
    border-spacing: 16px 0;
    width: 100%;
    * {font-size: 12pt; text-align: left;}
    caption {font-weight: bold}
    td:first-child {
        width: 64px;
        text-align: right;
        vertical-align: top;
    }
}

iframe.youtube {
    aspect-ratio: 560 / 315;
}
@media (max-width: 560px) {
    iframe.rutube {
        width: 100%;
        height: auto;
    }
}
iframe.rutube {
    aspect-ratio: 720 / 405;
}
@media (max-width: 720px) {
    iframe.rutube {
        width: 100%;
        height: auto;
    }
}