Blinking dot win CSS

blinking-dot.html

<div class="main">
  <div class="container">
    <div class="box">
      <div class="circContainer">
        <div class="circ"></div>
        <div class="circPulse one"></div>
        <div class="circPulse two"></div>
      </div> 
  </div>
</div>

dot.css

.main {
  display: table;
  width: 100%;
  height: 100%;
  margin: 0 auto;
}

.container {
  display: table-cell;
  vertical-align: middle;
  background: azure;
}

.circContainer {
    width: 25px;
    height: 25px;
    position: relative;
    
}

circContainer:nth-of-type(1) {
      top: 0px;
      left: 75px;
}
    
          .circContainer  .circ {
        background: red
      }
      .circContainer .circPulse {
        background: red
      }
      
      
 .circ {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  position: absolute;
  z-index: 9;
  left: 10px;
  top: 10px;
}

.circPulse {
  width: 25px;
  height: 25px;
  border-radius: 50%;
  position: absolute;
  top: 0;
  left: 0;
  /* animation */
  -webkit-animation: pulse 1.4s ease-out;
  -moz-animation: pulse 1.4s ease-out;
  animation: pulse 1.4s ease-out;
  -webkit-animation-iteration-count: infinite;
  -moz-animation-iteration-count: infinite;
  animation-iteration-count: infinite;
}

 .one {
    -webkit-animation-delay: 0ms;
  }
  .two {
    -webkit-animation-delay: 750ms;
  }
  
  
@-webkit-keyframes pulse {
   0% {
     -webkit-transform:scale(0);
     opacity:0;
   }
   25% {
     -webkit-transform:scale(0.3);
     opacity:1;
   }
  50% {
     -webkit-transform:scale(0.6);
     opacity:.6;
   }
  75% {
     -webkit-transform:scale(.9);
     opacity:.3;
   }
  100% {
     -webkit-transform:scale(1);
     opacity:0;
   }
}