#canvas {
	z-index: 1;
	position: absolute;
	left: 50%; top: 50%;
	background: #fff;
	margin-left: -500px; margin-top: -200px;
	border: solid #aaa 1px;
	border-radius: 0px;
	background-image: linear-gradient(to bottom, #2F80ED 0%,  #56CCF2 70%, #a8e063 70.001%,  #56ab2f 100%);
}