/* CSS Document */
dl {
	text-align: justify;
	width:600px ;
	margin: 0 auto;
}

dl dt {
	width:5em;
	color: rgba(249,255,1,1.00);
	float: left;
}

dl dt::after { 
	content: "/";
}

dl dd { 
	margin-left: 5em;
}

div {
	margin: 1em
}

iframe {
	width:600px;
	height: 600px;
}

@media screen and (max-width: 999px) {/* 640px以下*/
	dl {
		width:100%;
	}
	
	iframe {
		width:100%;
		height: 80vh;
		margin: 1em auto;
	}
}