欠かせないのはガーリーブラウス
#fanista_embed_player_wrap_540{
width: 100%;
margin:0 auto;
}
#fanista_embed_player_wrap_540 #fanista_embed_player_inner_540{
position: relative;
width: 100%;
padding-top: 100%;
margin:0 auto;
}
#fanista_embed_player_wrap_540 #fanista_embed_player_inner_540 iframe {
position: absolute;
top: 0;
right: 0;
width: 100% !important;
height: 100% !important;
}