iframe {
    display: block;
    padding: 0;
    margin: 0;
}

.ratiobox {
    position: relative;
    overflow: hidden;
    width: 100%;
    padding-top: 56.25%;
}

.ratiobox iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    margin: 0;
}

.hide {
    display: none;
}

.ttv.chat {
    width: 100%;
    height: 600px;
    max-height: 60vh;
}