body {
  margin: 0;
  padding: 0;
  text-align: center;
  background-color: #0077be;
  font-family: Arial, sans-serif;
}

h1 {
  color: #fff;
}

canvas {
  display: block;
  margin: 20px auto;
  background: url('/slike/sea-background.jpg') no-repeat center center / cover;
  border: 2px solid #fff;
}