body {
  width: 100%;
  height: 100%;
  margin: 0 auto;
  overflow: hidden;
  background-color: #d3d3d3;
  position:fixed;
  text-decoration: none;
  margin-top: 16px;
  text-decoration: none;

}

model-viewer {
	width: 910px;
	height: 560px;
	margin: 0 auto;
	padding-top: 33px;
	text-align: center;
	
}


@media (max-width: 730px) {
model-viewer {
	width: 640px;
	height: 260px;
	margin: 0 auto;
	margin-top: 16px;
	text-align: center;
	}
	
}

@media (max-width: 420px) {
model-viewer {
	width: 340px;
	height: 580px;
	margin: 0 auto;
	margin-top: 16px;
	text-align: center;
	}
	
}

.header	{
	position: fixed;
	left: 0;
	top: 0;
	width: 100%;
	text-align: center;
}


.footer	{
	position: fixed;
	left: 0;
	bottom: 0;
	width: 100%;
	text-align: center;
}

.text {
	font-family: Open Sans, sans serif;
	text-align: center;
	text-decoration: none;
	color: #424242;
	
}