/* CSS Document */
.youtube{
    display: flex;
    flex-wrap: wrap;
	justify-content: space-between;
    border: 1px solid #CCC;
    padding: 1em;
    margin-bottom: 3em;
}
.youtube > p{
	aspect-ratio: 16 / 9;
	flex-basis: calc(100% / 2 - 1%);
	max-width: calc(100% / 2 - 1%);
}
.youtube > p >iframe{
	width: 100%;
	height: 100%;
}

/*--737px以下 ------------------------------------*/
@media only screen and (max-width: 737px) {
.youtube > p{
	flex-basis: 100%;
	max-width:100%;
}
.youtube > p + p{
	margin-top: 1em;
}
}