body {
  padding: 0;
  margin: 0;
  background-color: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}
h1 {
  color: #484848;
  font-size: 50px;
  font-weight: bold;
  font-family: monospace;
  letter-spacing: 7px;
  cursor: pointer;
}
h1 span {
  transition: 0.5s linear;
}
h1:hover span:nth-child(1) {
  margin-right: 5px;
}
h1:hover span:nth-child(1):after {
  content: "";
}
h1:hover span:nth-child(2) {
  margin-left: 30px;
}
h1:hover span {
  color: #fff;
  text-shadow: 0 0 10px #fff,
               0 0 20px #fff,
               0 0 40px #fff;
}