<!DOCTYPE html>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, minimum-scale=0.5" />
<style>
  html {
    width: 100%;
    height: 100%;
    scrollbar-width: none;
  }
  body {
    width: 200%;
    height: 2000px;
    margin: 0;
    padding: 0;
  }

  #fixed-element {
    width: 100%;
    height: 200vh;
    position: fixed;
    top: 0px;
    background-color: green;
  }
</style>
<div id="fixed-element"></div>
