body
{
  margin: 0;
  height: 100vh;
  background-color: #000;
}

#divgame
{ 
	width:100%; 
	height:100vh; 
	position:relative; 
}

#divgame canvas
{ 
	position:absolute; 
	top: 0;bottom:0;right:0;left:0; 
	margin:auto; 
}

ul
{
	position: absolute;
	top: 0;right:0;left:0; 
	list-style-type: none;
	margin:auto;
	height: 30px;
	display: flex;
	flex-direction: row;
	z-index: 1;
	text-align: center; 
}
  
ul li
{
	margin: 0 auto;
}

li a
{
	display: block;
	color: #000;
	padding: 8px 16px;
	text-decoration: none;
	background-color: #f1f1f1;
	z-index: 1;
}

/* Change the link color on hover */
li a:hover
{
	background-color: #555;
	color: white;
	z-index: 1;
}