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

#loading-mask .loading-main {
  left: 50%;
  position: absolute;
  text-align: center;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 400px;
}

#loading-mask .loading-main img {
  display: block;
  height: auto;
  margin: 0;
  width: 400px;
}