html,
body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  display: table;
  background-color: black;
}

@font-face {
  font-family: neon;
  src: url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/707108/neon.ttf);
}

.container {
  display: table-cell;
  text-align: center;
  vertical-align: middle;
}

.neon {
  font-family: neon;
  color: #FB4264;
  font-size: 4vw;
  line-height: 4vw;
  text-shadow: 0 0 3vw #F40A35;
}

.flux {
  font-family: neon;
  color: #426DFB;
  font-size: 4vw;
  line-height: 4vw;
  text-shadow: 0 0 3vw #2356FF;
}

.neon {
  animation: neon 1s ease infinite;
  -moz-animation: neon 1s ease infinite;
  -webkit-animation: neon 1s ease infinite;
}

@keyframes neon {
  0%,
  100% {
    text-shadow: 0 0 1vw #FA1C16, 0 0 3vw #FA1C16, 0 0 10vw #FA1C16, 0 0 10vw #FA1C16, 0 0 .4vw #FED128, .5vw .5vw .1vw #806914;
    color: #FED128;
  }
  50% {
    text-shadow: 0 0 .5vw #800E0B, 0 0 1.5vw #800E0B, 0 0 5vw #800E0B, 0 0 5vw #800E0B, 0 0 .2vw #800E0B, .5vw .5vw .1vw #40340A;
    color: #806914;
  }
}

.flux {
  animation: flux 2s linear infinite;
  -moz-animation: flux 2s linear infinite;
  -webkit-animation: flux 2s linear infinite;
  -o-animation: flux 2s linear infinite;
}

@keyframes flux {
  0%,
  100% {
    text-shadow: 0 0 1vw #1041FF, 0 0 3vw #1041FF, 0 0 10vw #1041FF, 0 0 10vw #1041FF, 0 0 .4vw #8BFDFE, .5vw .5vw .1vw #147280;
    color: #28D7FE;
  }
  50% {
    text-shadow: 0 0 .5vw #082180, 0 0 1.5vw #082180, 0 0 5vw #082180, 0 0 5vw #082180, 0 0 .2vw #082180, .5vw .5vw .1vw #0A3940;
    color: #146C80;
  }
}

@import url('https://fonts.googleapis.com/css2?family=Raleway:wght@400;700&display=swap');
*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
a{
    position: relative;
    display: inline-block;
    padding: 25px 30px;
    margin: 40px 0;
    color: #03e9f4;
    text-decoration: none;
    text-transform: uppercase;
    transition: 0.5s;
    letter-spacing: 4px;
    overflow: hidden;
    margin-right: 50px;
   
}
a:hover{
    background: #03e9f4;
    color: #050801;
    box-shadow: 0 0 5px #03e9f4,
                0 0 25px #03e9f4,
                0 0 50px #03e9f4,
                0 0 200px #03e9f4;
     -webkit-box-reflect:below 1px linear-gradient(transparent, #0005);
}
a:nth-child(1){
    filter: hue-rotate(270deg);
}
a:nth-child(2){
    filter: hue-rotate(110deg);
}
a span{
    position: absolute;
    display: block;
}
a span:nth-child(1){
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg,transparent,#03e9f4);
    animation: animate1 1s linear infinite;
}
@keyframes animate1{
    0%{
        left: -100%;
    }
    50%,100%{
        left: 100%;
    }
}
a span:nth-child(2){
    top: -100%;
    right: 0;
    width: 2px;
    height: 100%;
    background: linear-gradient(180deg,transparent,#03e9f4);
    animation: animate2 1s linear infinite;
    animation-delay: 0.25s;
}
@keyframes animate2{
    0%{
        top: -100%;
    }
    50%,100%{
        top: 100%;
    }
}
a span:nth-child(3){
    bottom: 0;
    right: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(270deg,transparent,#03e9f4);
    animation: animate3 1s linear infinite;
    animation-delay: 0.50s;
}
@keyframes animate3{
    0%{
        right: -100%;
    }
    50%,100%{
        right: 100%;
    }
}


a span:nth-child(4){
    bottom: -100%;
    left: 0;
    width: 2px;
    height: 100%;
    background: linear-gradient(360deg,transparent,#03e9f4);
    animation: animate4 1s linear infinite;
    animation-delay: 0.75s;
}
@keyframes animate4{
    0%{
        bottom: -100%;
    }
    50%,100%{
        bottom: 100%;
    }
}