#loading-mask {
    position: fixed;
    left: 0;
    top: 0;
    height: 100%;
    width: 100%;
    background: #fff;
    user-select: none;
    z-index: 9999;
    overflow: hidden;
  }

  .loading-wrapper {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -100%);
  }

  .loading-dot {
    animation: antRotate 1.2s infinite linear;
    transform: rotate(45deg);
    position: relative;
    display: inline-block;
    font-size: 64px;
    width: 64px;
    height: 64px;
    box-sizing: border-box;
  }

  .loading-dot i {
    width: 22px;
    height: 22px;
    position: absolute;
    display: block;
    background-color: #1890ff;
    border-radius: 100%;
    transform: scale(0.75);
    transform-origin: 50% 50%;
    opacity: 0.3;
    animation: antSpinMove 1s infinite linear alternate;
  }

  .loading-dot i:nth-child(1) {
    top: 0;
    left: 0;
  }

  .loading-dot i:nth-child(2) {
    top: 0;
    right: 0;
    -webkit-animation-delay: 0.4s;
    animation-delay: 0.4s;
  }

  .loading-dot i:nth-child(3) {
    right: 0;
    bottom: 0;
    -webkit-animation-delay: 0.8s;
    animation-delay: 0.8s;
  }

  .loading-dot i:nth-child(4) {
    bottom: 0;
    left: 0;
    -webkit-animation-delay: 1.2s;
    animation-delay: 1.2s;
  }

  @keyframes antRotate {
    to {
      -webkit-transform: rotate(405deg);
      transform: rotate(405deg);
    }
  }

  @-webkit-keyframes antRotate {
    to {
      -webkit-transform: rotate(405deg);
      transform: rotate(405deg);
    }
  }

  @keyframes antSpinMove {
    to {
      opacity: 1;
    }
  }

  @-webkit-keyframes antSpinMove {
    to {
      opacity: 1;
    }
  }