﻿<!DOCTYPE html>
<style>
.scroller {
  width: 100px;
  height: 100px;
  overflow: scroll;
  /* to make the scroller a white mask over the content */
  filter: brightness(0) invert(1);
  position: relative;
  top: -200px;
}
.content {
  width: 100px;
  height: 100px;
  background: green;
}
</style>
<div class="content"></div>
<div class="content"></div>
<div class="scroller"></div>
<div class="scroller"></div>