* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    overflow: hidden;
    background: black;
}

canvas {
    position: absolute;
    top: 0;
    left: 0;
}

.center {
  border: 5px solid;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  padding: 10px;
  font-color: white;
  background: orange;
}