<!-- --------------- Created By InCoder --------------- -->
<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Amazing Glowing Buttons - InCoder</title>
  <link rel="stylesheet" href="main.css">
</head>

<body>
  <button class="inBtn inBtn-glow-one">Submit</button>
  <button class="inBtn inBtn-glow-two">Submit</button>
</body>

</html>
/* --------------- Created By InCoder --------------- */
* {
  margin: 0;
  padding: 0;
}

body {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #202020;
}

.inBtn {
  border: 0px;
  color: #fff;
  margin: 0.5rem;
  font-size: 16px;
  cursor: pointer;
  padding: 8px 20px;
  position: relative;
  border-radius: 50px;
}

.inBtn-glow-one {
  background: linear-gradient(
    90deg,
    #2fd79f,
    #2f89d7,
    #2f89d7,
    #2fd79f,
    #2fd79f
  );
  background-size: 400%;
}

.inBtn-glow-two {
  background: linear-gradient(
    90deg,
    #d42cc9,
    #ad24a4,
    #bd2a31,
    #d73e2f,
    #d42cc9
  );
  background-size: 400%;
}

.inBtn::before {
  content: "";
  position: absolute;
  top: -5px;
  right: -5px;
  left: -5px;
  bottom: -5px;
  background: inherit;
  filter: blur(8px);
  border-radius: 50px;
  transition: opacity 0.4s;
  opacity: 0;
}

.inBtn:hover::before {
  opacity: 1;
  z-index: -1;
}

button:hover {
  z-index: 1;
  animation: buttonFilter 8s linear infinite;
}

@keyframes buttonFilter {
  0% {
    background-position: 0%;
  }
  100% {
    background-position: 400%;
  }
}
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