@charset "utf-8";
.video {
    position: relative;
    width: 100%;
    padding-top: 56.25%; /* 16:9のアスペクト比 */
    height: 0;
}

.video iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}
#c1 {
	clear: both;
	margin:    ;
	padding:    ;
}
#c1 h1,
#c1 div {
	text-align: center;
}
#c2 {
	clear: both;
	margin:    ;
	padding:    ;
}
#c30 {
	clear: both;
	margin: 20px 0 0 0;
	padding:    ;
}
#c30 {
	display: flex;
	flex-direction: row;
	flex-wrap: wrap;
}
#c30 > div.box {
	box-sizing: border-box;
	overflow: hidden;
}
#c21 {
	clear: both;
	display: none;
	margin: 20px 0 0 0;
	padding:    ;
}
#c21 h3,
#c21 div {
	text-align: left;
}
#c18 {
	clear: both;
	display: none;
	margin:    ;
	padding:    ;
}
#c18 h2,
#c18 div {
	text-align: left;
}
@media screen and (min-width: 641px) and (max-width: 834px) {
#c1 {
}
#c2 {
}
#c30 {
}
#c30 {
}
#c21 {
	display: none;
}
#c18 {
	display: none;
}
}
@media screen and (max-width: 640px) {
#c1 {
}
#c2 {
}
#c30 {
}
#c30 {
}
#c21 {
	display: none;
}
#c18 {
	display: none;
}
}