.content_loading {
  position: relative;
  height: 100px;
}
.ico_loading {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 32px;
  height: 8px;
  background: url(/static/img/gif/ico_loading.gif);
  background-size: 32px 8px;
  transform: translate(-50%, -50%);
  -webkit-transform: translate(-50%, -50%);
}