<style>
html, body {
  margin: 0;
  padding: 0;
  overflow: hidden;
  background: linear-gradient(to bottom, #0f2027, #203a43, #2c5364);
  height: 100vh;
}

#snow-canvas {
  position: fixed;
  top: 0;
  left: 0;
  display: block;
  width: 100%;
  height: 100%;
}
#snow-canvas {
  filter: blur(1px);
}
</style>