/* HTML: <div class="loader"></div> */
.loader {
      font-weight: bold;
      font-family: sans-serif;
      font-size: 20px;
      animation: l1 1s linear infinite alternate;
      text-align: center;
    }
    .loader:before {
      content:"Loading...";
    }
    @keyframes l1 {to{opacity: 0}}