W3School TIY Editor

<!DOCTYPE html>
<html>
<head>
<style>
#container {
  scroll-snap-type: both mandatory;
  width: 50%;
  aspect-ratio: 1/1;
  margin: 30px auto;
  background-color: #fff;
  white-space: nowrap;
  overflow-x: scroll;
  overflow-y: scroll;
  border: solid black 2px;
}
#container > div {
  display: inline-block;
  height: 85%;
  border-radius: 5%;
  aspect-ratio: 1/1;
  scroll-snap-align: end;
  scroll-margin: 0 10px 30px 0;
}

.green    { background-color: lightgreen; }
.pink     { background-color: lightpink; }
.blue     { background-color: lightblue; }
.yellow   { background-color: yellow; }
.grey     { background-color: lightgray; }
</style>
</head>
<body>

<h1>CSS scroll-margin 属性，应用于底部和右侧</h1>

<p>向容器中间滚动，然后松开，观察 scroll-margin 如何使元素底部与容器之间产生 30 像素的距离，以及元素右侧与容器之间产生 10 像素的距离。</p>

</body>
</html>