/* contest用 
----------------------------------------------------------------------*/

/* Youtube表示 */

.youtubebox {
	width: 60%; /* 横幅変更 */
	padding: 0;
	box-sizing: border-box;
}

.youtubebox .inner {
	padding-top: 56.25%;
	position: relative;
	height: 0;
	overflow: hidden;
}

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