body,
html {
  margin: 0;
}

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

* {
  box-sizing: border-box;
}

canvas {
  margin: auto;
  border: 2px solid #eee;
}

.modal {
  background: linear-gradient(45deg, rgb(255, 71, 71), rgb(255, 125, 125));
  box-shadow: 0 0 10px #222;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  padding: 2rem;
  color: #eee;
  font-weight: bold;
  font-size: 32px;
  display: none;
}

.show {
  display: block;
}

.hide {
  display: none;
}