table.align-center td, table.align-center th {
    text-align: center;
    vertical-align: middle;
}

table.align-center div.first {
    margin-top: 1em !important;
}

.youtube {
    position:relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
    max-width: 100%;
    height: auto;
}

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

.youtube_play:hover {
    cursor:pointer;
}

.youtube_play {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}
.youtube_btn {
    width:64px;
    height:45px;
    background-image: url('../youtube_social_icon_dark.png');
    background-size: 64px 45px;
    position:absolute;
    top:0;
    bottom:0;
    left:0;
    right:0;
    margin:auto;
}