* {
  margin: 0;
  padding: 0;
}

div {
  margin: 50px;
  position: relative;
}

div i {
  position: absolute;
  width: 2px;
  height: 30px;
  background: red;
  transform: rotate(30deg);
  top: 0;
  left: 10px;
  animation: myfirst 2s infinite;
}

div i:nth-child(2) {
  transform: rotate(-30deg);
  left: 24px;
}

div i:nth-child(3) {
  transform: rotate(90deg);
  top: 24px;
  top: 13px;
  left: 17px;
}

div:after {
  content: '';
  position: absolute;
  width: 2px;
  height: 11px;
  background: red;
  top: 10px;
  left: 17px;
}

div:before {
  content: '';
  content: '';
  position: absolute;
  background: red;
  width: 2px;
  height: 3px;
  left: 17px;
  bottom: -25px;
}

@-webkit-keyframes myfirst

{
  0% {
    box-shadow: 0 0 10px red,0 0 10px red;
  }
  50% {
    box-shadow: 0 0 10px transparent;
  }
  100%{
    box-shadow: 0 0 10px red,0 0 10px red;
  }
}