/* ʱ´úJava - https://NowJava.com */
html,
body {
width: 100%;
height: 100%;
margin: 0;
}

canvas {
border: 1px solid #eee;
position: relative;
left: 50%;
top: 50%;
transform: translate(-50%, -50%);
background: -webkit-linear-gradient(top, #0e83f5 0%, #21bdf6 100%);
background: -ms-linear-gradient(top, #0e83f5 0%, #21bdf6 100%);
background: -moz-linear-gradient(top, #0e83f5 0%, #21bdf6 100%);
background: linear-gradient(top, #0e83f5 0%, #21bdf6 100%);
}