HTMLify

body {
    height: 100vh;
    display: grid;
    place-items: center;
    background: #151515;
  }
  
  button {
    height: 60px;
    width: 60px;
    background: rgba(0, 0, 0, .4);
    border-radius: 50%;
    border-top: 3px solid #1D9AF2;
    border-right: 3px solid transparent;
    border-bottom:none;
    border-left:none;
    animation: spinner 700ms linear infinite;
  }
  
  @keyframes spinner {
      to {
        transform: rotate(360deg);
      }
  }