*{margin:0;padding:0;list-style-type:none;}
body{overflow-x:hidden;}

html {
  box-sizing: border-box;
}

*, *::after, *::before {
  box-sizing: inherit;
}

*, *:before, *:after {
  box-sizing: border-box;
  outline: none;
}

html {
  font-family: 'Source Sans Pro', sans-serif;
  font-size: 16px;
  font-smooth: auto;
  font-weight: 300;
  line-height: 1.5;
  color: #444;
}

body {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100vh;
  background-color: #20293a;
}

div {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 300px;
  height: 300px;
  background-color: #20293a;
  color: #20293a;
  border-radius: 50%;
  font-weight: bold;
  line-height: 1.5;
  text-align: center;
  animation: text 10s ease infinite;
}
div:after {
  position: absolute;
  content: "";
  top: -5%;
  left: -5%;
  right: 0;
  z-index: -1;
  height: 100%;
  width: 100%;
  margin: 0 auto;
  transform: scale(0.85);
  filter: blur(5vw);
  background: linear-gradient(270deg, #00fcbd, #7400f9);
  background-size: 150% 150%;
  border-radius: 50%;
  animation: glowmation 10s linear infinite;
}
@keyframes glowmation {
  0% {
    top: -3%;
    left: -3%;
    background-position: 0% 50%;
    background-size: 150% 150%;
  }
  12.5% {
    top: -3%;
    left: 0;
    background-size: 70% 30%;
  }
  25% {
    top: -3%;
    left: 3%;
    background-size: 100% 50%;
  }
  37.5% {
    top: 0;
    left: 3%;
    background-size: 70% 30%;
  }
  50% {
    top: 3%;
    left: 3%;
    background-position: 100% 50%;
    background-size: 30% 30%;
  }
  62.5% {
    top: 3%;
    left: 0;
    background-size: 30% 70%;
  }
  75% {
    top: 3%;
    left: -3%;
    background-size: 50% 100%;
  }
  87.5% {
    top: 0;
    left: -3%;
    background-size: 30% 70%;
  }
  100% {
    top: -3%;
    left: -3%;
    background-position: 0% 50%;
    background-size: 150% 150%;
  }
}
@keyframes text {
  0% {
    color: #7400f9;
  }
  50% {
    color: #00fcbd;
  }
  100% {
    color: #7400f9;
  }
}