portant;
  }
  .testedElement, .testedElement * {
      color: blue !important;
      background: blue !important;
  }
  .oof1 {
      position: absolute;
  }
  .oof2 {
      position: fixed;
  }
  .nobox {
      display: none;
  }
</style>
<script>
  function spaceBeforeElement(element) {
      var mnBefore = previousInFlowSibling(element);
      return element.getBoundingClientRect().left - mnBefore.getBoundingClientRect().right;
  }

  setup({ explicit_done: true });
  window.addEventListener("load", run