/*.video {position: relative;}

.video_youtube {
    position: relative;
    padding-bottom: 56.25%;
    padding-top: 25px;
    height: 0;
    margin-bottom: 15px;
}*/


.video_youtube {
	position: relative;
	padding-bottom: 56.25%; /* 16:9 */
	padding-top: 25px;
	height: 0;
        margin-bottom: 15px;
}
.video_youtube iframe {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
}