ul{
  display: flex;
  justify-content: center;
}

ul li{
  position: relative;
  display: flex; 
  justify-content: center; 
  align-items: center; 
  color: #666;
  font-size: 20px;
  height: 30px;
  width: 30px;
  background: #151617;
  border-radius: 50%;
  margin-left: 8px;
  margin-top: -45px;
  cursor: pointer;
  transition: .5s;
}

ul li:hover:before{
  filter: blur(3px);
  transform: scale(1.2);
}

  ul li:before{
    position: absolute;
    content: '';
    top: 0;
    left: 0;
    height: inherit;
    width: inherit;
    /* background: #d35400; */
    border-radius: 50%;
    transform: scale(.9);
    z-index: -1;
    transition: .5s;
  }
  ul li:nth-child(1):before{
    background: #4267B2;
  }
  ul li:nth-child(2):before{
    background: #1DA1F2;
  }
  ul li:nth-child(3):before{
    background: #E1306C;
  }
  ul li:nth-child(4):before{
    background: #2867B2;
  }
  ul li:nth-child(5):before{
    background: #ff0000;
  }
  ul li:hover:before{
    filter: blur(3px);
    transform: scale(1.2);
    /* box-shadow: 0 0 15px #d35400; */
  }
  ul li:nth-child(1):hover:before{
    box-shadow: 0 0 15px #4267B2;
  }
  ul li:nth-child(2):hover:before{
    box-shadow: 0 0 15px #1DA1F2;
  }
  ul li:nth-child(3):hover:before{
    box-shadow: 0 0 15px #E1306C;
  }
  ul li:nth-child(4):hover:before{
    box-shadow: 0 0 15px #2867B2;
  }
  ul li:nth-child(5):hover:before{
    box-shadow: 0 0 15px #ff0000;
  }
  ul li:nth-child(1):hover{
    color: #456cba;
    box-shadow: 0 0 15px #4267B2;
    text-shadow: 0 0 15px #4267B2;
  }
  ul li:nth-child(2):hover{
    color: #26a4f2;
    box-shadow: 0 0 15px #1DA1F2;
    text-shadow: 0 0 15px #1DA1F2;
  }
  ul li:nth-child(3):hover{
    color: #e23670;
    box-shadow: 0 0 15px #E1306C;
    text-shadow: 0 0 15px #E1306C;
  }
  ul li:nth-child(4):hover{
    color: #2a6cbb;
    box-shadow: 0 0 15px #2867B2;
    text-shadow: 0 0 15px #2867B2;
  }
  ul li:nth-child(5):hover{
    color: #ff1a1a;
    box-shadow: 0 0 15px #ff0000;
    text-shadow: 0 0 15px #ff0000;
  }
  ul li:hover{
    color: #ffa502;
    box-shadow: 0 0 15px #d35400;
    text-shadow: 0 0 15px #d35400;
  }