.art-video {
	height: 0;
	overflow: hidden;
	padding-bottom: 56.25%;
	padding-top: 30px;
	position: relative;
}
.art-video iframe,
.art-video object,
.art-video embed {
	height: 100%;
	left: 0;
	position: absolute;
	top: 0;
	width: 100%;
}

.art_copiright {
    text-aling: center;
    text-align: center;
    font-size: 65%;
}