glow on transparent png

by Mike Loucas

HTML

<div class="image-holder">


<div class="img bottleimage-glow">
</div>

</div>

CSS

.bottleimage-glow {
    background-image: url(https://upload.wikimedia.org/wikipedia/commons/c/ce/Coca_Cola_Zero_bottle.png);
    background-size: 500px 650px;
    background-repeat: no-repeat;
    filter: drop-shadow(0px 0px 10px blue);
      animation: Gloworm 5000ms infinite;
}

.img {
    width: 500px;
    height: 650px;
      animation: Gloworm 5000ms infinite;
}

@keyframes Gloworm {
  0% { box-shadow: 0 0 -10px #c4a300; }
  40% { box-shadow: 0 0 20px #c4a300; }
  60% { box-shadow: 0 0 20px #c4a300; }
  100% { box-shadow: 0 0 -10px #c4a300; }
}