* {
    box-sizing: border-box;
}

/* the canvas *must not* have any border or padding, or mouse coords will be wrong */
#canvas {
    padding-right: 0;
    display: block;
    border: 0px none;
    visibility: hidden;
}

body {
  width: 100vw;
  height: 100vh;
  margin: 0;
  padding: none;
  background-color: #402751;
}

#game {
  display: flex;
  flex-flow: column;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100%;
}