* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: #12151d;
  color: #ffffff;
  font-family: Arial, Helvetica, sans-serif;
  display: grid;
  place-items: center;
}

.page {
  width: 100%;
  padding: 20px;
}

.game-card {
  width: min(100%, 430px);
  margin: 0 auto;
  text-align: center;
}

h1 {
  margin: 0 0 8px;
  font-size: 32px;
  letter-spacing: 1px;
}

.hint,
.small {
  margin: 8px 0;
  color: #d7d7d7;
  font-size: 14px;
}

canvas {
  display: block;
  width: min(100%, 384px);
  height: auto;
  margin: 14px auto;
  border: 4px solid #ffffff;
  border-radius: 14px;
  background: #70cfd0;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  box-shadow: 0 20px 50px rgba(0,0,0,.45);
  touch-action: manipulation;
}