.hf_spinner {
      margin: 100px auto 0;
      width: 70px;
      text-align: center;
    }

    .spinner > div {
      width: 18px;
      height: 18px;
      background-color: #333;

      border-radius: 100%;
      display: inline-block;
      -webkit-animation: bouncedelay 1.4s infinite ease-in-out both;
      animation: bouncedelay 1.4s infinite ease-in-out both;
    }

    .spinner .bounce1 {
      -webkit-animation-delay: -0.32s;
      animation-delay: -0.32s;
    }

    .spinner .bounce2 {
      -webkit-animation-delay: -0.16s;
      animation-delay: -0.16s;
    }

    @-webkit-keyframes bouncedelay {
      0%, 80%, 100% { -webkit-transform: scale(0.0) }
      40% { -webkit-transform: scale(1.0) }
    }

    @keyframes bouncedelay {
      0%, 80%, 100% {
        transform: scale(0.0);
        -webkit-transform: scale(0.0);
      } 40% {
        transform: scale(1.0);
        -webkit-transform: scale(1.0);
      }
    }

    <div class="hf_spinner">
      <div class="bounce1"></div>
      <div class="bounce2"></div>
      <div class="bounce3"></div>
    </div>