.snowflake {
  position: absolute;
  background-image: url('jackolantern64px.png');
  background-size: cover;
  background-position: center center;
  width: 32px;
  height: 32px;
  /*background: linear-gradient(white, white);*/
  /* Workaround for Chromium's selective color inversion */
  /*border-radius: 50%;*/
  filter: drop-shadow(0 0 10px white);
}