style.css

@import url('https://fonts.googleapis.com/css?family=Roboto:400,500,700&display=swap');
body{
	margin: 0;
	padding: 0;
}
*{
	box-sizing: border-box;
	font-family: 'Roboto', sans-serif;
}
.container{
	width: 100vw;
	height: 100vh;
	display: flex;
	align-items: center;
	justify-content: flex-start;
	flex-direction: column;
}
.content{
	display: flex;
	align-items: center;
	justify-content: center;
}
canvas{
	position: absolute;
}
video{
	max-width: 100%;
	max-height: 100%;
}
header{
	width: 100%;
	height: 80px;
	border-bottom: 1px solid lightgrey;
	text-align: center;
	font-size: 20px;
	display: flex;
	align-items: center;
	justify-content: center;
}
footer{
	width: 100%;
	height: 30px;
	position: absolute;
	bottom: 0px;
	border-top: 1px solid lightgrey;
	display: flex;
	align-items: center;
	justify-content: center;
}
footer a {
	color: black;
	text-decoration: none;
}