JSFiddle - React, Tailwind, and code Playground

HTML

<div class="cd-single-point">
				<a class="cd-img-replace" href="#0"></a>
			</div>

CSS

.cd-single-point {
  position: absolute;
  list-style-type: none;
  left: 20px;
  top: 20px;
}

.cd-single-point>a {
    position: relative;
    z-index: 2;
    display: block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #0079ff;
    -webkit-transition: background-color 0.2s;
    -moz-transition: background-color 0.2s;
    -o-transition: background-color 0.2s;
    transition: background-color 0.2s;
}

.cd-single-point::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  animation: cd-pulse 2s infinite;
}
 
@keyframes cd-pulse
{
0%  {box-shadow:0 0 0 0 #0079ff}
100%{box-shadow:0 0 0 20px rgba(255,150,44,0)}
}