<div class="block"></div>

body {
  background-color: gray;
}

.block {
  margin: 20px;
  border-radius: 50%;
  position: relative;
  background-image: url('https://media.giphy.com/media/vyTnNTrs3wqQ0UIvwE/giphy.gif');
  width: 300px;
  height: 300px;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.block::before {
  content: '';
  background: inherit;
  width: 104%;
  height: 104%;
  position: absolute;
  top: -2%;
  left:-2%;
  z-index: -1;
  filter: blur(5px);
  border-radius: inherit;
  background-size: 90%;
}