<!DOCTYPE html>
<html>
<head>
<style>
#container {
width: 80%;
aspect-ratio: 2/1;
margin: auto;
border: solid black 2px;
overflow-x: scroll;
overflow-y: hidden;
white-space: nowrap;
scroll-snap-type: x mandatory;
scroll-padding-left: 20px;
}
.blue {
background-color: lightblue;
height: 95%;
aspect-ratio: 3/2;
}
.green {
background-color: lightgreen;
height: 80%;
aspect-ratio: 4/3;
}
.blue, .green {
display: inline-block;
margin: 2px;
scroll-snap-align: start;
}
</style>
</head>
<body>
<h3>CSS scroll-padding-left property.</h3>
<p>Scroll-padding-left property is set on the container, so that the snap position of child elements is offset by a distance to the left of the container.</p>
<p>In this case, snap position is set to start in x direction, so the element in focus should snap into place at the very left of the container. But instead, because of the scroll-padding-left value, the element in focus is offset by a 20px distance from the left side of the container to the child element.</p>