<!DOCTYPE html>

<html>
<head>
    <style>
        .container {
            height: 200px;
            width: 200px;
            margin: 40px;
            border: 5px solid blue;
        }
        .absolute {
            position: absolute;
            background-color: green;
            left: 50px;
            top: 50px;
            height: 100px;
            width: 100px;
        }
    </style>
</head>
<body>
    <div class="container" style="position: relative;">
        <div class="absolute"></div>
    </div>

    <div class="container" style="will-change: position;">
        <div class="absolute"></div>
    </div>
</body>
</html>