tests/wpt/mozilla/tests/css/absolute_div_with_padding.html

<!doctype html>
<meta charset="utf-8">
<title>CSS Test: Absolute position div with padding should not increase in size</title>
<link rel="match" href="absolute_div_with_padding_ref.html">
<style>
    .absolute{
        position: absolute;
        top: 0px;
        left: 0px;
        padding: 100px;
        width: 150px;
        height: 150px;
        background-color: green;
    }
    .box{
        width: 350px;
        height: 350px;
        position: relative;
        background: red;
    }
</style>
<div class="box">
    <div class="absolute"></div>
</div>