* {
  padding: 0;
  margin: 0;
  list-style: none;
}
body {
  height: 100vh;
  display: flex;
  background-color: #262626;
  text-align: center;
  align-items: center;
  justify-content: center;
}
ul {
  display: flex;
}
ul li {
  position: relative;
  display: block;
  height: 60px;
  width: 60px;
  font-size: 30px;
  line-height: 60px;
  color: #666;
  background-color: #171515;
  cursor: pointer;
  border-radius: 50%;
  margin: 0 15px;
}
ul li::before {
  position: absolute;
  content: "";
  top: 0;
  left: 0;
  background-color: #0a82ed;
  height: 100%;
  width: 100%;
  border-radius: 50%;
  z-index: -1;
  transform: scale(0.9);
  transition: 0.5s;
}
ul li:nth-child(1)::before {
  background-color: #0a82ed;
}
ul li:nth-child(2)::before {
  background-color: #17ba7bb3;
}
ul li:nth-child(3)::before {
  background-color: #e23670;
}
ul li:nth-child(4)::before {
  background-color: #8614b7;
}
ul li:nth-child(5)::before {
  background-color: #ff1a1a;
}
ul li:hover::before {
  filter: blur(4px);
  box-shadow: 0 0 15 #0a82ed;
  transform: scale(1.2);
}
ul li:nth-child(1):hover::before {
  box-shadow: 0 0 15 #0a82ed;
  transform: scale(1.2);
}
ul li:nth-child(2):hover::before {
  box-shadow: 0 0 15 #17ba7bb3;
  transform: scale(1.2);
}
ul li:nth-child(3):hover::before {
  box-shadow: 0 0 15 #e23670;
  transform: scale(1.2);
}
ul li:nth-child(4):hover::before {
  box-shadow: 0 0 15 #8614b7;
  transform: scale(1.2);
}
ul li:nth-child(5):hover::before {
  box-shadow: 0 0 15 #ff1a1a;
  transform: scale(1.2);
}
ul li:nth-child(1):hover {
  color: #0a82ed;
  box-shadow: 0 0 15px #0a82ed;
  text-shadow: 0 0 15px #0a82ed;
}
ul li:nth-child(2):hover {
  color: #17ba7bb3;
  box-shadow: 0 0 15px #17ba7bb3;
  text-shadow: 0 0 15px #17ba7bb3;
}
ul li:nth-child(3):hover {
  color: #e23670;
  box-shadow: 0 0 15px #e23670;
  text-shadow: 0 0 15px #e23670;
}
ul li:nth-child(4):hover {
  color: #8614b7;
  box-shadow: 0 0 15px #8614b7;
  text-shadow: 0 0 15px #8614b7;
}
ul li:nth-child(5):hover {
  color: #ff1a1a;
  box-shadow: 0 0 15px #ff1a1a;
  text-shadow: 0 0 15px #ff1a1a;
}