@charset "UTF-8";

.youtube_3col ul {display: -webkit-box;display : -webkit-flex;display : -ms-flexbox;display : flex;}

.youtube_3col ul li {
    width: calc(100% / 3);
    display: block;
}


@media screen and (max-width: 900px) {
.youtube_3col ul {
    display: block;
}
}

@media screen and (max-width: 900px) {
.youtube_3col ul li {
    display: block;
    width: 100%;
    padding: 10px;
}
}