paint-containment-with-absolute-position.html

<!DOCTYPE html>
<style>
div {
    width: 100px;
    height: 50px;
}
.container {
    contain: paint;
    background-color: green;
}
.absolute {
    position: absolute;
    top: 0px;
    left: 100px;
    background-color: red;
}
.inline {
    display: inline-block;
}
</style>
<body>
<div class="container"><div class="absolute"></div></div>
<div class="container inline"><div class="absolute"></div></div>

chromium/third_party/blink/web_tests/fast/css/containment/paint-containment-with-absolute-position.html