body {
     margin: 0;
     padding: 0;
     display: flex;
     justify-content: center;
     align-items: center;
     height: 100vh;
     background: #000;
     box-sizing: border-box;
 }

 h1 {
     margin: 0;
     padding: 0;
     color: #111;
     font-size: 16em;
 }

 h1 span {
     margin: 0;
     padding: 0;
     animation: animate 2s linear infinite;

 }

 h1 span:nth-child(1) {
     animation-delay: 0.25s;
 }

 h1 span:nth-child(2) {
     animation-delay: 0.5s;
 }

 h1 span:nth-child(3) {
     animation-delay: 0.75s;
 }

 h1 span:nth-child(4) {
     animation-delay: 1s;
 }

 h1 span:nth-child(5) {
     animation-delay: 1.25s;
 }

 h1 span:nth-child(6) {
     animation-delay: 1.5s;
 }

 h1 span:nth-child(7) {
     animation-delay: s;
 }

 h1 span:nth-child(8) {
     animation-delay: 1.75s;
 }

 @keyframes animate {

     0%,
     100% {
         color: #fff;
         filter: blur(2px);
         text-shadow: 0 0 10px #00b3ff,
             0 0 10px #00b3ff,
             0 0 20px #00b3ff,
             0 0 40px #00b3ff,
             0 0 80px #00b3ff,
             0 0 120px #00b3ff,
             0 0 200px #00b3ff,
             0 0 300px #00b3ff,
             0 0 400px #00b3ff;
     }

     5%,
     95% {
         color: #111;
         filter: blur(0px);
         text-shadow: none;
     }
 }