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

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
  background: radial-gradient(circle at center, #0f2027, #203a43, #2c5364);
}

.app {
  width: 100vw;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

.board-wrapper {
  width: 92vmin;
  height: 92vmin;
}

canvas {
  width: 100%;
  height: 100%;
  background: #fff;
  border-radius: 14px;
  display: block;
}