<!DOCTYPE html>
<!--
 | "overflow" property affects the clipping of all of the element's content
 | except any descendant elements whose containing block is the viewport or
 | an ancestor of the element.
 | Results should be similar to overflow hidden.
 |   https://www.w3.org/TR/CSS21/visufx.html#overflow
 -->
<html>
<head>
  <style>
    .outer-common {
      background-color: rgba(63, 81, 181, 0.5);
      width: 100px;
      height: 100px;
    }
    .outer-1 {
      overflow: scroll;
      margin-bottom: 30px;
    }
    .outer-2 {
      position: absolute;
      overflow: scroll;
    }
    .outer-3 {
      position: absolute;
      left: 140px;
      top: 0px;
    }
    .outer-4 {
      position: absolute;
      overflow: scroll;
      left: 140px;
    }
    .inner-common {
      position: absolute;
      z-index: -1;
      width: 50px;
      height: 50px;
    }
    .inner-1 {
      background-color: #7BAAF7;
      left: 25px;
      top: 25px;
    }
    .inner-2-container {
      position: absolute;
      overflow: scroll;
      width: 25px;
      height: 50px;
      left: 25px;
      top: 75px;
    }
    .inner-2 {
      background-color: #3367D6;
    }
    .inner-3 {
      background-color: #57BB8A;
      left: 75px;
      top: 25px;
    }
    .inner-4 {
      background-color: #0B8043;
      left: 75px;
      top: 75px;
    }
  </style>
</head>
<body>
  <div class="outer-common outer-1">
    <div class="inner-common inner-1"></div>
    <div class="inner-2-container">
      <div class="inner-common inner-2"></div>
    </div>
    <div class="inner-common inner-3"></div>
    <div class="inner-common inner-4"></div>
  </div>
  <div class="outer-common outer-2">
    <div class="inner-common inner-1"></div>
    <div class="inner-2-container">
      <div class="inner-common inner-2"></div>
    </div>
    <div class="inner-common inner-3"></div>
    <div class="inner-common inner-4"></div>
  </div>
  <div class="outer-common outer-3">
    <div class="inner-common inner-1"></div>
    <div class="inner-2-container">
      <div class="inner-common inner-2"></div>
    </div>
    <div class="inner-common inner-3"></div>
    <div class="inner-common inner-4"></div>
  </div>
  <div class="outer-common outer-4">
    <div class="inner-common inner-1"></div>
    <div class="inner-2-container">
      <div class="inner-common inner-2"></div>
    </div>
    <div class="inner-common inner-3"></div>
    <div class="inner-common inner-4"></div>
  </div>
</body>
</html>