.fixed-callback {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100px;
  height: 100px;
  position: fixed;
  right: 25px;
  bottom: 25px;
  background: var(--color-2);
  border: 2px solid var(--color-2);
  text-align: center;
  font-size: 12px;
  line-height: 13px;
  color: var(--color-text-primary);
  border-radius: 50%;
  z-index: 999;
  cursor: pointer;
  text-decoration: none;
  z-index: 1;
}
.fixed-callback svg {
  margin-bottom: 3px;
}
.fixed-callback:before {
  content: '';
  z-index: -1;
  background: var(--color-2);
  opacity: .1;
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  border-radius: 50%;
  -webkit-animation: .8s linear 0s infinite alternate jingle;
  -moz-animation: .8s linear 0s infinite alternate jingle;
  -o-animation: .8s linear 0s infinite alternate jingle;
  animation: .8s linear 0s infinite alternate jingle;
}
@-webkit-keyframes jingle { from {left:-5px;right:-5px;top:-5px;bottom:-5px} to {left:-15px;right:-15px;top:-15px;bottom:-15px}  }
   @-moz-keyframes jingle { from {left:-5px;right:-5px;top:-5px;bottom:-5px} to {left:-15px;right:-15px;top:-15px;bottom:-15px}  }
     @-o-keyframes jingle { from {left:-5px;right:-5px;top:-5px;bottom:-5px} to {left:-15px;right:-15px;top:-15px;bottom:-15px}  }
        @keyframes jingle { from {left:-5px;right:-5px;top:-5px;bottom:-5px} to {left:-15px;right:-15px;top:-15px;bottom:-15px}  }