<a class="button" href="#">Click here!</a>
body{
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background: #2f2f2f;
}
.button {
        background-color: #1c87c9;
        border-radius: 60px;
        border: none;
        color: #eeeeee;
        cursor: pointer;
        display: inline-block;
        font-family: sans-serif;
        font-size: 20px;
        padding: 10px 10px;
        text-align: center;
        text-decoration: none;
      }
      @keyframes glowing {
        0% {
          background-color: #2ba805;
          box-shadow: 0 0 5px #2ba805;
        }
        50% {
          background-color: #49e819;
          box-shadow: 0 0 20px #49e819;
        }
        100% {
          background-color: #2ba805;
          box-shadow: 0 0 5px #2ba805;
        }
      }
      .button {
        animation: glowing 1300ms infinite;
      }
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