/* The total backdrop filter limit is 1242 * 2208 * 10, so make each div 1/10th of that */
div {
      -webkit-backdrop-filter: blur(1px);
      width: 1242px;
      height: 2208px;
      position: absolute;
      top: 0;
      left: 0;
      border: 1px solid blue;
      box-sizing: border-box;
}