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;
  scroll-padding-left: 30px;
}

#container > div {
  display: inline-block;
  height: 95%;
  border-radius: 5%;
  aspect-ratio: 1/1;
  scroll-snap-align: start;
}

.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-padding-left 属性，双向吸附</h1>

<p>向容器中间滚动，停止滚动，观察 scroll-padding-left 属性如何在容器左侧与元素之间创建 30px 的距离。</p>

</body>
</html>