Demo: CSS overscroll-behavior-inline

<div class='container'>
  <div class='scrollable'>
    <div class='item'>Item 1</div>
    <div class='item'>Item 2</div>
    <div class='item'>Item 3</div>
    <div class='item'>Item 4</div>
    <div class='item'>Item 5</div>
  </div>
</div>

.container {
  width: 300px;
  height: 100px;
  overflow: hidden;
  border: 2px solid #333;
}

.scrollable {
  display: flex;
  width: 600px;
  height: 100%;
  overflow-x: auto;
  overscroll-behavior-inline: contain;
  background-color: #f0f0f0;
}

.item {
  min-width: 100px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid #666;
  background-color: #cce5ff;
  margin-right: 10px;
}

// No JavaScript required for this demo