<div class="container">
<div class="callback__button">CALL NOW</div>
  </div>

.container {
  text-align:center;
}
.callback__button {
    display: inline-flex;
    border: 5px solid #ffffff;
    background-color: #0368ea;
    padding: 11px 67px;
    font-weight: 700;
    color: #ffffff;
  position:relative;
}
.callback__button:before {content:'';position: absolute;width: 58px;height: 36px;background: url(https://i.ibb.co/HPM00FD/arrow.png) no-repeat center center;left: -93px;top: 5px;
animation: spin 2s infinite linear;
}
.callback__button:after {content:'';position: absolute;width: 58px;height: 36px;background: url(https://i.ibb.co/HPM00FD/arrow.png) no-repeat center center;right: -93px;top: 5px;
animation: spin 2s infinite linear;
}
.callback__button:hover{
    cursor: pointer;
}


@keyframes spin {
  0%, 100% {
    transform: rotate(180deg) translateX(0, 0);
  }
  50% {
    transform: rotate(180deg) translateX(0,100%);
  }
}